Question

can some one plz explain how 2 solve proportion plz?

Answer 1

can you tell me the question you're on? and i'll explain while we work it out :)

Answer 2

well i dont have a question tht uses proportions yet but i just need 2 know how 2 solve them

Answer 3

you should be using cross multiplication to solve them

Answer 4

example plz

Answer 5

lol i need an example problem

Answer 6

here hold on

Answer 7

mmk

Answer 8

Hadria bought a storage trunk to place at the end of her bed that has a volume of 4.5 cubic feet. What is the volume of the storage trunk in cubic inches?

Answer 9

thts the problem im on

Answer 10

4.5ft x (12in/1ft)

Answer 11

basically just multiply 4.5 and 12

Answer 12

54

Answer 13

yep. so 54 cubic inches

Answer 14

omg thank you so much

Answer 15

no problem :)

Answer 16

that wasn't cross multiplication btw

Answer 17

oh ok

Answer 18

1ft = 12in. that's why i put 12in/1ft

Answer 19

ohhhhhh

Answer 20

if you were trying to find how many feet it was, it would be 54in x (1ft/12in)

Answer 21

ohhhh ok tht makes sense

Answer 22

there's a specif name for this kinda setup, i just forgot what it was lol

Answer 23

specific*

Answer 24

wait it said tht 54 was wrong

Answer 25

wat

Answer 26

the thing im using says tht 54 isnt the answer

Answer 27

it hsould be...

Answer 28

should*

Answer 29

its either
648
7776
or 3888

Answer 30

oooh i set it up wrong. lawls.

Answer 31

lol

Answer 32

4.5ft^3 x (12in/1ft)^3

Answer 33

so you have to cube 12 first, then multiply that by 4.5

Answer 34

omg thts so many numbers

Answer 35

so its 7776

Answer 36

wait

Answer 37

yea

Answer 38

kk thank you

Answer 39

and the setup is called dimensional analysis.

Dimensional Analysis: A problem-solving method used in physics, chemistry, engineering, and mathematics that is based on treating units in calculations as algebraic factors or fractions.

Answer 40

you should look it up, because it helps me loads :)

Answer 41

ok thank you so much

Answer 42

no problem :)