EXPLANATION
Let's see the facts:
Giraffe tall = 15ft
Shadow = 3 ft
Woman shadow = 1 ft
Woman tall = ?
Now, applying the proportional relationship, this will give us:
[tex]\frac{\text{Adult tall long}}{\text{long shadow}}=\frac{x}{\text{Woman shadow}}[/tex][tex]\frac{15}{3}=\frac{x}{1}[/tex]Clearing x:
x= 15/3
[ANSWER] is 5 ft for a woman tall.