4 hours difference is present between 4 o clock to 8 o clock.
so, 4 hours means 240 minutes.
time ration given from 4 o click to now and now to 8 o clock is 5:1
so, 4 o click to now = (5 * 240)/ 6 = 200 minutes.
and from now to 8 o clock = (1 * 240) / 6 = 40 minutes.
so current time is = 8 o clock - 40 minutes = 4 o clock + 200 minutes = 7 : 20 .