Let's convert the second time into minutes. 5 hours corresponds to
[tex]5 h \cdot 60 m/h =300 m[/tex]
So the second time is
[tex]t_2 = 5 h 45 m = 300 m + 45 m = 345 m[/tex]
We can now solve the problem by using a simple proportion. We know that the plane takes 75 minutes to fly 930 miles, so the distance covered in 345 minutes is given by
[tex]930 miles : 75 min = x : 345 min[/tex]
[tex]x= \frac{930 miles \cdot 345 min}{75 min} =4278 miles [/tex]