The ruling planet of Number 4 is Uranus while that of Number 5 is Mercury. Uranus is a slow moving planet while Mercury is a fast moving planet. Therefore, the characteristics of both people will be very different. People of number 4 are systematic, conventional and practical. On the other hand, people of number 5 are unconventional, easy going and freedom loving. Both the people should understand each other and manage their boundaries in order for a healthy love affair.
Most believe that these numbers are never compatible as they display vastly different temperaments. Some also believe that this combination is not recommended for any kind of relationship. An association of these numbers is very challenging. People of number 4 are direct and to the point while that of number 5 are diplomatic and indirect. In order to achieve success, both the people will have to pay attention to what is being said and what is being interpreted.