3c | |
4 |
= |
450 |
1 |
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
Numerator 1 = | Denominator 1 * Numerator 2 |
Denominator 2 |
3c = | 4 * 450 |
1 |
3c = | 1800 |
1 |
3c = 1800
3c | |
3 |
= |
1800 |
3 |