Find the value of y for a given value of x, if y varies directly with x. If y = 2.52 when x = 8.4, what is y when x = 2.7?

Solution:

y = 2.52 when x = 8.4 [Given]

Let us create a direct proportion

y₁/x₁ = y₂/x₂

Substituting the values

2.52/8.4 = y₂/2.7

By cross multiplication we get

y₂ = 2.52/8.4 × 2.7

So we get

y₂ = 0.81

Therefore, y is 0.81 when x is 2.7.

Find the value of y for a given value of x, if y varies directly with x. If y = 2.52 when x = 8.4, what is y when x = 2.7?

Summary:

The value of y for a given value of x, if y varies directly with x, if y = 2.52 when x = 8.4, y is 0.81 when x = 2.7.