Answer:
![\large \boxed{X = 4}](https://img.qammunity.org/2021/formulas/mathematics/high-school/kydwh9798xvbpqqipo36sbd89z434mxcg9.png)
Explanation:
5/2.5 = X/2
To solve a proportion, use the following equation:
(numerator * opposite denominator) = (numerator * opposite denominator)
Substitute in given numbers
(5 * 2) = (X * 2.5)
Multiply to simplify
10 = 2.5X
Divide both sides of this equation by 2.5
![\large \boxed{X = 4}](https://img.qammunity.org/2021/formulas/mathematics/high-school/kydwh9798xvbpqqipo36sbd89z434mxcg9.png)
Hope this helps :)