You entered the following equivalent proportions:
| 4 | |
| 30 |
| = |
| x |
| 45 |
Define the proportion formula:
If 2 proportions are equal:
we can cross multiply to get:
Numerator 1 Denominator 1
=
Numerator 2 Denominator 2 Numerator 1 * Denominator 2 = Denominator 1 * Numerator 2
Solving for Numerator 2 we get:
| Numerator 2 = | Numerator 1 * Denominator 2 |
| Denominator 1 |
Evaluate and simplfy
| x = | 4 * 45 |
| 30 |
| x = | 180 |
| 30 |
Final Answer
x = 6
