According to Pythagoras, Number 4 is representing a solid foundation, good support, that is why it is one of the most substantial and significant numbers. Reliability characterizes those who are born with the vibration of the Birthday Number 4. This number is expressing reliability, commitment and patience. People born with Number 4 remain faithful to their principles until the end.
Due to the fact that people of this Birthday Number are more practical than carriers of some other numbers, they can finally achieve a significant success in life. Even the most solid foundation can not stand if it has too much pressure. So there is no surprise, if the stoic calmness of the typical representative of Number 4 will give way to an explosion of anger, if with all his restraint.