How can I add my semester GPA to my cumulative GPA?

To add your semester GPA to your cumulative GPA, you need to multiply your current cumulative GPA by the total number of credits you have completed so far, then add the product to the product of your semester GPA and the number of credits for the current semester. Finally, divide this sum by the total number of credits you have completed so far plus the number of credits for the current semester.