| 2 | |
| 3x |
| = |
| 6 |
| 9 |
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
| Denominator 1 = | Numerator 1 * Denominator 2 |
| Numerator 2 |
| 3x = | 2 * 9 |
| 6 |
| 3x = | 18 |
| 6 |
| 3x | |
| 3 |
| = |
| 3 |
| 3 |