Answer: 6 feet 3 inches
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Explanation:
We can set up the following proportion
a/b = c/d
where the numerators 'a' and 'c' represent the scaled down dimensions, and b and d represent the actual real life dimensions.
For this particular problem, we have to keep in mind that 'a' and 'c' are in cm; while b and d are in inches.
So we could have
- a = 16.8 cm
- b = 84 inches
- c = 15 cm
- d = x inches, where x is unknown for now
Since d is in inches, this makes x be in inches as well.
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Let's solve for x
a/b = c/d
16.8/84 = 15/x
16.8x = 84*15 ..... cross multiply
16.8x = 1260
x = 1260/16.8
x = 75
The suspect is 75 inches tall. This converts to 75/12 = 6.25 feet or 6 feet 3 inches (since 0.25 ft = 0.25*12 = 3 ft)
