if 2.25 : x :: 5 : 4, then x is equal to: Options 1.2 1.6 1.4 1.8

Question

if 2.25 : x :: 5 : 4, then x is equal to:

Options 1.2

1.6

1.4

1.8

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Solution

This is a proportion problem. The proportion is 2.25 : x = 5 : 4.

To solve for x, you can cross-multiply and solve for x.

So, 2.25 * 4 = 5 * x

9 = 5x

Then, divide both sides by 5 to solve for x.

x = 9 / 5

x = 1.8

So, the correct answer is 1.8.

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