What you can do is simply switch the fractions like so, 3/4 and 12/16 then simplify 12/16 and you get 3/4 so your answer is yes, it is proportional.
Answer:

Step-by-step explanation:
Factor out the common terms, and get: 
Factor
, and get: 
<em>Hope this helps!!</em>
I believe this answer is greater than
The complete question in the attached figure
we know that
[area of a circle]=pi*r²
for r=1 unit
[area of a circle]=pi*1²---------> pi units²
if the area a full circle of 360°--------------> is pi
the area of sector 88°------------------------> X
X=88*pi/360--------> 0.77 units²
the answer is
<span>
the area of sector AOB is 0.77 units</span>
²