SAT math proportions - scale
"On a map that is drawn to scale, two cities that are m miles apart while are 5 inches apart on the map. If two other cities are m+4 miles apart, how many inches apart would they be on the same map?"
Answer
http://www.satmath4u.com/threads/43-sat-math-proportions
A proportion is an equation which states that two ratios are equal.
When the terms of a proportion are cross multiplied, the cross products are equal.
Cross multiplication is the multiplication of the numerator of the first ratio by the denominator of the second ratio and the multiplication of the denominator of the first ratio by the numerator of the second ratio.
The corresponding measure are proportional and let
be the required distance
So,
"On a map that is drawn to scale, two cities that are m miles apart while are 5 inches apart on the map. If two other cities are m+4 miles apart, how many inches apart would they be on the same map?"
Answer
http://www.satmath4u.com/threads/43-sat-math-proportions
A proportion is an equation which states that two ratios are equal.
When the terms of a proportion are cross multiplied, the cross products are equal.
Cross multiplication is the multiplication of the numerator of the first ratio by the denominator of the second ratio and the multiplication of the denominator of the first ratio by the numerator of the second ratio.
The corresponding measure are proportional and let
be the required distanceSo,
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