The Birch family wants to save some money on their utility bill by hanging some of their clothes outside on a line to dry rather than using their dryer to do so. They know that they cannot dry all their clothes on the line because of the lack of space and time, so they plan to use the dryer for only two drying loads per week. Their washing machine holds an extra-large capacity that is 1.5 times as much as their dryer will hold. Their clothesline holds only half as much clothing as their dryer does.

If they have to wash enough clothes each week to fill their washing machine 4 times, how many times will they have to fill the clothesline in order to dry their clothes each week?

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