What is 4:3 ratio?

If you’re wondering what is 4:3 ratio, it refers to the aspect ratio used in older televisions and computer screens. This ratio means that for every 4 units of width, there are 3 units of height. It was the standard display format for many years but has since been replaced by wider aspect ratios like 16:9 for modern screens. However, the 4:3 ratio is still found in older media and retro games.