Applying cross multiplication to solve a proportion

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  • Опубліковано 12 гру 2024

КОМЕНТАРІ • 409

  • @tylerenol
    @tylerenol 3 роки тому +113

    When the guy said "2 over 12." I felt that.

  • @maebee9099
    @maebee9099 4 роки тому +982

    I learned this in grade 8 now I’m in grade 11 forgetting how to do this

  • @DeletedUser73926
    @DeletedUser73926 3 роки тому +130

    Was never taught cross multiply, always did it the old fashioned way so as a senior I’m learning this now lol
    Nice lesson

  • @julianperez1596
    @julianperez1596 4 роки тому +230

    When the girl who raised the hand saved your life.

  • @miakindaithink
    @miakindaithink 4 роки тому +338

    me trying to learn how to do this after not asking in class 👁👄👁✌️

    • @evilyncraft3592
      @evilyncraft3592 4 роки тому +28

      Dude fr like 😔👊 my social anxiety could never-

    • @miakindaithink
      @miakindaithink 4 роки тому +18

      @@evilyncraft3592 especially with that mask I can’t even speak loudly 😔✌️

    • @evilyncraft3592
      @evilyncraft3592 4 роки тому +2

      @Kaid Bunny Disc Golf dude same

    • @rosin_eater
      @rosin_eater 3 роки тому

      Same lol

    • @achooo676
      @achooo676 3 роки тому +7

      @@evilyncraft3592 my teacher: "iM nOt a MiNd ReADeR"

  • @RogueRubio
    @RogueRubio 3 роки тому +30

    You explained it perfectly. I also like how you teach/interact with your student. I can tell you’re a great teacher.

  • @jacobp.2024
    @jacobp.2024 2 роки тому +4

    Literally all I needed was to read your video title, and realize "oh, that's a thing." Nothing else. Just your video title. THANK YOU.

  • @cael1474
    @cael1474 Рік тому +4

    The fact that he explained why we have to divide the 3x by 3 was chef's kiss. I always didn't connect the dots that you do one operation to undo its opposite operation, that small detail was never explain to me but this video did😭💗

  • @4law173
    @4law173 Рік тому +7

    ur students r so lucky to have u as their math teacher

  • @jaden4935
    @jaden4935 3 роки тому +10

    For this question, theres an next way which is say:
    You have 2/3 and they say it’s = to x/24 you can make it equivalent. So divide both denominators and use the answer you get from dividing it and multiply it by the numerator.
    Eg. 4/8 = 24/x. Divide the numerators and multiply that answer to the denominator.
    4x6 = 24
    -- --
    8x6 48

  • @janedoe3345
    @janedoe3345 3 роки тому +6

    Im taking intro to financial accounting at the university lvl and I still need this. THIS SAVED ME!! THANK YOU SIR!

  • @blancaalvarez8739
    @blancaalvarez8739 2 місяці тому

    I'm in pharmacy school and believe me when I tell you. I needed to refresh my understanding of this for RX calculations. Glad this video exists :)

  • @shahdkarout3093
    @shahdkarout3093 4 роки тому +69

    Omg I wish this guy was my math teacher😂😂😂

  • @svkotto2688
    @svkotto2688 4 роки тому +49

    so we just all here for school

  • @slystar6418
    @slystar6418 2 роки тому +4

    This is probably the greatest math teacher ever! Thank you!!

  • @isaiahvenegas7230
    @isaiahvenegas7230 3 роки тому +1

    In the video at 2:14 I heard someone say “hold up” 😭😭soooooo relatable

  • @McGregor007
    @McGregor007 Рік тому +2

    Graduated back in 2015, but I loved cross multiplication with a variable so much I had to refresh my memory! Awesome lesson. 😎🍻

  • @alyssamartinez1300
    @alyssamartinez1300 4 роки тому +67

    In the 10 grade learning this for chemistry 💀

    • @munshibarkatali8928
      @munshibarkatali8928 3 роки тому

      Same here

    • @Pfyzer
      @Pfyzer 3 роки тому

      wait till calculus, you'll need it. not as simple as this, but the concept

    • @totallynotafanficreader7850
      @totallynotafanficreader7850 3 роки тому

      SAME

    • @AdrianGarcia-ww1ik
      @AdrianGarcia-ww1ik 3 роки тому +1

      Im 33 relearning this to become a helicopter pilot for the army. So I guess you can say we share each other’s struggle😆😅

    • @user22-6
      @user22-6 3 роки тому

      SAME HERE IM DOING A REVIEW HAHA

  • @edwounedesulme4633
    @edwounedesulme4633 4 роки тому +53

    im trying to learn my best but cant understand it much i learn this in my math class (im in 6th grade)

  • @Realionaire_ra
    @Realionaire_ra 2 роки тому +1

    Youre a good teacher. Thank you for refreshing this method to me.

  • @ShawntiaKnott
    @ShawntiaKnott 3 роки тому +16

    Currently 22. Never learned how to do this.

    • @totallynotafanficreader7850
      @totallynotafanficreader7850 3 роки тому +2

      Well at least you’re learning now. I’m 16 and STRUGGLING with this.

    • @clashoclan3371
      @clashoclan3371 2 роки тому

      @@totallynotafanficreader7850
      Well at least you're learning it now

  • @braxtonkurth6459
    @braxtonkurth6459 7 місяців тому

    I love needing this video at 23 years old for my apprenticeship class. couldn't remember how to do any of this but now its all comin back to me

  • @oumaくん
    @oumaくん 4 роки тому +30

    in 7th grade re-learning this for fractions-

    • @ty.1311
      @ty.1311 4 роки тому

      Same

    • @perezdelilah
      @perezdelilah 3 роки тому

      Same like tf why we got to learn it again 😤

    • @lucasmcfadd6648
      @lucasmcfadd6648 3 роки тому

      same but I completely forgot how

    • @trencher4570
      @trencher4570 3 роки тому

      I'm in 7th but I'm just doing it for adv. Math

  • @We_Deliver_All
    @We_Deliver_All Рік тому

    The first video out of many, that explained why we do it. Thankyou.

  • @sakibrayhan8919
    @sakibrayhan8919 3 роки тому +5

    This teacher is really good!

  • @melvinchundi2726
    @melvinchundi2726 3 роки тому +7

    thank u so much 😭 im stuck at the question trying to remember this

  • @Monkchelle_Kongbama
    @Monkchelle_Kongbama 11 місяців тому

    I'll do you one simpler, no need for reducing or rewriting the problem
    The original problem is 4/6 = x/24
    so just multiply 4 * 24 then divide the result by 6
    x=16
    The standard name for this is a bit lackluster as it leaves out a major part of the operation. I learned it as "cross multiply and divide" which better gets the operations across to the learner as it tells you the only two things you _actually_ have to do to find your answer.
    This is by far the most useful math skill you will ever learn. It's the only one I still use in daily life. Usually when finding the percentage of something.

  • @AdrianGarcia-ww1ik
    @AdrianGarcia-ww1ik 3 роки тому +3

    Im 33 relearning this to become a helicopter pilot for the Army.
    Don’t worry kids...it never ends. Lol

  • @Webster45
    @Webster45 Рік тому +1

    10/10 this makes sense unlike other videos please make more videos

  • @brandonlamontcooper8141
    @brandonlamontcooper8141 10 місяців тому +1

    ok im missing a step. why is the 48 being divided by the 3 and where did the 3 come from? and after you said 3x you said 3x16 and confused me at 1:58

    • @Mystery_person20000
      @Mystery_person20000 4 місяці тому

      @@brandonlamontcooper8141 same idk where is he getting the 3.

  • @ALeenegativity
    @ALeenegativity 4 роки тому +8

    Thanks u just gave ideas but didn't rlly get it much

  • @bozartspianoarchive3546
    @bozartspianoarchive3546 2 роки тому +2

    Thanks! I was not understanding how to do it, but now I get it

  • @oldrrocr
    @oldrrocr 2 роки тому

    Great! Here because “Mean Girls” the movie refers to this term. My way is exactly backwards but I can do it in my head while flying an airplane. Yes I did do 4/6= 2/3 then I divided 24 by. 3 = 8 . Then multiply 2*8 =16…>>> 16/24. Your dyslexic students might find this easier to do.

  • @jaysanchez4538
    @jaysanchez4538 3 роки тому +4

    This actually made me remember how to do it. Thanks for the video, I have to watch cause I'm goin back to school.

  • @SirLingardinho
    @SirLingardinho 3 роки тому +2

    Thank you, this will help me on tomorrow's test.

    • @icewolfvip9580
      @icewolfvip9580 2 роки тому

      So eleven months later, how did the test go?

    • @SirLingardinho
      @SirLingardinho 2 роки тому

      @@icewolfvip9580 I forgot I'm not going to lie, but I think I did resonably well

  • @ZGZthingZ
    @ZGZthingZ Рік тому

    life saver. learned this stuff in 7th and im now a junior, this explained so well

  • @Johannesburg_
    @Johannesburg_ Рік тому

    i was absent the other day from school and i was behind b/c we learned 3 methods for proportions, i was able to understand 2 but cross multiplication i could not comprehend, until i watched this video, tysm

  • @kevthedev2.069
    @kevthedev2.069 3 роки тому +2

    Thank you so much the explanation was simple to follow I needed help how to do my homework thank you so much!

  • @sakichan0248
    @sakichan0248 3 роки тому +1

    This came off so much easier for me tysm sir

  • @godistheonetruegod.1592
    @godistheonetruegod.1592 4 роки тому +4

    i'm learning this in 6th grade, Thank you unknown person for not knowing how to do it.

  • @KhaledQara
    @KhaledQara 3 роки тому +1

    I was wondering what if the 4 over 6 was like 9 over 16. Do you divide by 1 or split it in half i don't get it

  • @hashtagpotatos8720
    @hashtagpotatos8720 4 роки тому +17

    im in my senior year trying to make up for a semester I failed in freshmen year but any video or method i use to solve the problem it just says its wrong and it'll show me a video, ill write down every piece of notes but still it gives me problems to solve that nothing in that video or "explanation" showed me. Very discouraging.

    • @seattlewest9503
      @seattlewest9503 4 роки тому

      HashtagPotatos same

    • @crabs_pov3946
      @crabs_pov3946 4 роки тому

      Is highschool hard, I’m a freshman and all my work is really hard and confusing. Asking if everything will get better and more clear

    • @ragingroadhog6073
      @ragingroadhog6073 4 роки тому +1

      Yeah it’s hard. You just have to never fail and you’ll be fine. Focus on your studies.

    • @vbqz209
      @vbqz209 4 роки тому

      Damn I'm in my freshmen year and every video I watch helps me bc my teacher talks to fast

    • @prieltheprune1302
      @prieltheprune1302 4 роки тому

      @@crabs_pov3946 yes

  • @austinanderson9167
    @austinanderson9167 3 роки тому +3

    Currently sitting in nursing school wondering how to do this so I can pass my test 😂

  • @jmvdgang6825
    @jmvdgang6825 Рік тому

    I love your short and simple videos

  • @Highlighter_kid
    @Highlighter_kid Рік тому

    Seems like a damn good teacher

  • @bhavynsandhu
    @bhavynsandhu 4 роки тому +2

    I don't understand my math class but I understand this math class

  • @hitenverma8268
    @hitenverma8268 3 роки тому +1

    I'm from india thankyou 💯

  • @GeraldJustineCorpuz
    @GeraldJustineCorpuz Рік тому

    I learnt this all the way back in junior high but never knew the logic so I always ended up doing the second method, never thought of it that way so that was how cross multiplication works. My would head always hurt when our teachers just pull this off in an equation on the board LOL

  • @Midnight-MD
    @Midnight-MD 8 місяців тому

    I’m refreshing my mind for the EOC

  • @owenperrone5967
    @owenperrone5967 3 роки тому +4

    In 6th grade learning this for no reason because it’s going to be on the test

  • @dylanbabb8903
    @dylanbabb8903 3 роки тому +3

    I completely forgot how to cross multiply and I’m a sophomore, I learned it when I was in 7 grade or something

  • @the_neet_pont
    @the_neet_pont Рік тому

    Thank you so much!
    I always forget how to do this.

  • @CrAzY6tothe6
    @CrAzY6tothe6 3 роки тому +1

    04:45 when I buy a chair off wish

  • @christianherrera4729
    @christianherrera4729 Рік тому

    2:28 BRO HIT US WITH THE RIZZ!!!

  • @fsnd7954
    @fsnd7954 2 роки тому +1

    that is really awesome bro, now i know, so far i school never know about sin cos tan, do u have the video about that too ?

  • @miaalashaee
    @miaalashaee 2 роки тому +1

    This was very helpful thank you💗💗💗

  • @alexanderasadullah5253
    @alexanderasadullah5253 3 роки тому +1

    Amazing
    Simple and clear

  • @bcnshdhhs3117
    @bcnshdhhs3117 3 роки тому +1

    Thank you I’m in grade 8 and was struggling with my home work 😅

  • @totallynotafanficreader7850
    @totallynotafanficreader7850 3 роки тому +4

    I’m in grade 10 and I completely forgot how to do this 😭

  • @jessicavella5193
    @jessicavella5193 3 роки тому +1

    pov: your here because "it wont be on the test tomorrow"

  • @komalkumarrout
    @komalkumarrout 4 роки тому +2

    Thanks a lot to learn in this video.

  • @umar56838
    @umar56838 Рік тому

    This video really helped me thanks!

  • @Hadouken21
    @Hadouken21 Рік тому

    Napakagaling mo idol

  • @oliviazito8636
    @oliviazito8636 4 роки тому +7

    kinda regretting not studying during the weekend because my math exam is in an hour and i am absolutely CLUELESS

    • @morphex6221
      @morphex6221 3 роки тому +1

      how was you math exam! hehe

  • @jilliancd854
    @jilliancd854 3 роки тому +1

    excuse me sir what did you do to
    48=3• to find the 16=X?

  • @JP-vu8hu
    @JP-vu8hu 2 роки тому +1

    Bruh I wish my teacher was like this

  • @pinkradish
    @pinkradish 4 роки тому +4

    The first time I finally get it

  • @Hypurr_Jrboa
    @Hypurr_Jrboa 4 роки тому +2

    Ooh thanks ^^ I didn't understand at first lol 👀👄👀

  • @viewsfromthe7side171
    @viewsfromthe7side171 4 роки тому +4

    Sounds like a condescending math teacher

  • @thebrownlife4158
    @thebrownlife4158 Рік тому +1

    welcome to baldi’s basicsssssss 🤣🤣🤣

  • @justynisbored
    @justynisbored Рік тому

    great teaching brian. 😆

  • @onlyluvcandace
    @onlyluvcandace 3 роки тому

    Not me being here just for a math exam lmao

  • @heibi55620
    @heibi55620 2 роки тому

    Wish me luck I’m taking my STAAR tomorrow ✌️

  • @AmmarHimself
    @AmmarHimself Рік тому

    thanks legend it helped me!!!

  • @hardpanchal2821
    @hardpanchal2821 3 роки тому

    Thank you So SO Much !!!

  • @awaisch3407
    @awaisch3407 2 роки тому

    You could also multiply 4 with 24 and then divide the answer with 6 and you’ll get x=16

  • @junukumarnayak5358
    @junukumarnayak5358 2 роки тому

    Thank you very much Sir.

  • @erinmzwr
    @erinmzwr 3 роки тому +2

    Yow- this vid is 5 mins long?! My class in math is 1hr bruhh-

  • @munshibarkatali8928
    @munshibarkatali8928 3 роки тому

    Do u take online classes for maths . Sir? I wanna join

  • @aseelfmohammed8145
    @aseelfmohammed8145 3 роки тому +1

    I learned this in grade 7 now I'm in grade 7 and i have math test on Monday

  • @fiz_a__.
    @fiz_a__. 3 роки тому

    Thanks! This helped me!

  • @eluquant
    @eluquant 4 роки тому +1

    Me in 7th grade bein like: owo wut

  • @KhalidBro
    @KhalidBro 3 роки тому

    hi pitbul. thx for helping

  • @amandaslifeandrecipes4209
    @amandaslifeandrecipes4209 3 роки тому

    Thank you, thank you that was helpful

  • @eugeneglova497
    @eugeneglova497 3 роки тому

    Thank you sir

  • @moronimtb6045
    @moronimtb6045 Рік тому

    Weird when you randomly called out kiana then stuttered and she even noticed your nervousness 🙄

  • @aidenromo1884
    @aidenromo1884 3 роки тому

    0:57 lmao the kid in the back 2 over 12

    • @brianmclogan
      @brianmclogan  3 роки тому +1

      🤣🤣🤣

    • @ImRanchWilder
      @ImRanchWilder 2 роки тому

      @@brianmclogan 4:45 why did someone need to move their seat lol?

  • @shieyan_vlog1281
    @shieyan_vlog1281 3 роки тому

    Im grade 3 today this our lesson for third grading.

  • @musicloverslurper
    @musicloverslurper 3 роки тому

    Me learning this in 7th grade: Sooo 2d is equivalent to banana.
    Me still in 7th grade but after banana: ohhh so there was no banana involved 🤣

  • @huxythe3630
    @huxythe3630 3 роки тому

    OH MY GOD THANK YOU

  • @rina-qz6xz
    @rina-qz6xz 2 роки тому

    THANQ SO MUCH I WAS CRYING I HAD AN ASSIGNMENT AND I FORGOT IT AT HOME SO I HAD MY FRIEND SEND PICTURES OF THE QUESTIONS SO I COULD DO IT OVER THE WEEKEND CAUSE ITS DUE ON MONDAY AND I FOGOT ABOUT IT UNTILL RIGHT NOW (Sunday 11:00pm) AND THIS HELPED ME BECAUSE I ALSO FORGOT MY MATERIAL I HOPE I DID IT RIGHT BECAUSE I DIDNT REDUCE

  • @sugarsweet4339
    @sugarsweet4339 3 роки тому

    ngl if i were in that class I would a fricking breakdown thinking my life

  • @tiffanytorresdepaul
    @tiffanytorresdepaul 3 роки тому

    im old and in college and learned this in 2004 and completely forgot !!!! why did I go back to college ugh

  • @joyjimenea9517
    @joyjimenea9517 Рік тому

    Omg it's so easy im at gr10 and tomorrow is my exam day! Wish me luck

  • @olivastallonechannel4444
    @olivastallonechannel4444 3 роки тому

    This sir is better

  • @joshhockey29_
    @joshhockey29_ 4 роки тому +1

    Thank you so much! I was having trouble finding 95\60 = 92\?

  • @hydro7661
    @hydro7661 3 роки тому

    This short cut just save me 10 minutes of my time

  • @SLAVRBLX123
    @SLAVRBLX123 4 роки тому +1

    u r the teacher baldi lol

  • @MiniNadez25
    @MiniNadez25 3 роки тому

    Thx bro my teacher sent me here

  • @ajrocha8481
    @ajrocha8481 3 роки тому

    You just saved my life 😂