Question

Consider the following proportion: 2 7  =  12 x Use cross products to write the equation: 2x = 84. What is the value of x?

Answer 1

Value of x is:

42

Explanation:

We are given a proportion as:

2:7= 12:x

or we can write it in the ratio form as:

`(2)/(7)=(12)/(x)`

using cross multiplication, we get

2x=84

On dividing both sides by 2, we get

x=42

Hence, Value of x is:

42