you’re performing the correct task in this case. if you were to set your WB to 3200, you would neutralise your tungsten lights to white, which is almost never really the point of tungsten. By setting it somewhere between 4000-4800, you’re opening up the possibility of color contrast within a shot where modern sensors tend to perform the best. Everything with a lower color temp than 4000 will be some degrees warmer than your neutral point, and everything with a higher color temp will be cooler.