I agree on your statement above mate because XRP is keep regaining a value nowadays, and in fact its showing a big percentage as well than bitcoin and ethereum on coinmarketcap. So definitely it will grow up more soon than what we're expecting
but unless it didn't fluctuate again especially bitcoin because mostly in the market are affected base on the performance of alternative coins nowadays wherein when bitcoin experienced a fluctuation.
Ripple is showing the best results throughout the year, but it is absolutely impossible for the currency to reach 4 dollars. In this case, Bitcoin must to not to the Moon or Mars, but really to the Sun. The time for such growth has not come yet.
I bet, Ripple can reach one dollar, but even in this case, it will be not so fast, maybe it will happen even in 2020.