Question

Which pair of ratios is proportional?

A.
4/9 and 16/45

B.
5/12 and 25/144

C.
12/18 and 18/27

D.
15/20 and 17/10

Answer 1

proportion and cross multiply

Answer 2

You can cross multiply and see if they equal each other..

\(\dfrac{4}{9} = \dfrac{16}{45}\)

\(\dfrac{4}{9} \nearrow \dfrac{16}{45}\)

\(\dfrac{4}{9} \searrow \dfrac{16}{45}\)

Answer 3

\[\text{first one: }[4\times 45=9\times 16]?\]

Answer 4

first one = 144/180

Answer 5

no

Answer 6

does 4 x 45 = 9 x 16

Answer 7

fliped it srry 180/144

Answer 8

._.

Answer 9

That gives you 180 = 144, not 180/144

And 180 doesn't equal 144, so the first one is incorrect.

Answer 10

\[180\ne 144\]

Answer 11

Try:

\(\dfrac{12}{18} = \dfrac{18}{27}\)

Answer 12

k

Answer 13

\[\text{does }12\times 27=18\times 18?\]

Answer 14

324 for both

Answer 15

Then you have your answer :)

Answer 16

thnx @iGreen and @kittiwitti1

Answer 17

Yep, so C's our answer.

Answer 18

When you put the fractions in a proportion and the cross-multiplication values are equal, you have two equivalent fractions.

You're welcome :)