A Brief Overview
of Methods for Solutions to Simple Proportional Problems
Proportional can
be arranged in two types Vertical or
Horizontal
The Law of
Proportions applies to both types of arrangements for Proportions.
The Product of the Means equals The Product of the Extremes.
N 4 3 9 4 N 2 6
--- = --- --- = --- --- = --- --- = ---
3 6 N 12 5 20 3 N
6N=12 36=9N 80=5N 2N=18
N=2 4=N 16=N N=9
Checking
2 4 3 9 4 16 2 6
--- = --- --- = --- --- = --- --- = ---
3 6 4 12 5 20 3 9
12=12 36=36 80=80 18=18
The Product of the Means equals The Product of the Extremes.
N : 3 = 4 : 6 3: N = 9 :12 4 : 5 = N : 20 2 : 3 = 6 : N
12 = 6N 9N = 36 5N = 80 18 = 2N
2 = N N = 4 N = 16 9 = N
Checking
2 4 3 9 4 16 2 6
--- = --- --- = --- --- = --- --- = ---
3 6 4 12 5 20 3 9
12=12 36=36 80=80 18=18
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