Question

What is the solution to the porpotion 4/12=10/x

A.

4.8






B.

3.3






C.

30






D.

3

Answer 1

C. 30
x = (10 x 12)/4

Answer 2

`(4)/(12) = (10)/(x) \\ \\ (1)/(3) = (10)/(x) \ / \ simplify \\ \\ (1)/(3) x = 10 \ / \ multiply \ each \ side \ by \ x \\ \\ (x)/(3) = 10 \ / \ simplify \\ \\ x = 10 * 3 \ / \ multiply \ each \ side \ by \ 3 \\ \\ x = 30 \ / \ simplify \\ \\`

The final result is C) 30.