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Section 6.3 1
When two pairs of numbers such as (3, 2 and 6, 4) have the same ratio, we say that they are proportional.
The equation states that the pairs 3, 2 and 6, 4
are proportional. Such an equation is called a proportion.
3 6
2 4
Section 6.3 2
Section 6.3 3
Solving Proportions
To solve equate cross products and then divide on both sides to get x alone.
x c
a d
Solve: Write a mixed numeral for the answer.6
8 5
x
Section 6.3 4
Homework:Problems 23, 45, 43, 53, 57 – solve each equation top/down as demonstrated in class.