Question

Find the unknown value in the proportion. Round to the nearest tenth if needed. 4/3=12/?

Answer 1

Starting with the proportion:

`(12)/(?)`

Since it should be equal to 4/3, notice that if we divide both numerator and denominator by 3, then we should get 4 and 3 respectively:

`(12)/(?)=(12/3)/(?/3)=(4)/(?/3)=(4)/(3)`

Therefore, ?÷3 is equal to 3.

Which number is equal to 3 when we divide it by 3?

That number is 9. 9÷3=3

Therefore, ?=9.