If we know the height and width of an image, we can calculate the ratio of height to width by simple division. This math determines the “aspect ratio” of the image. Thus 5472 ÷ 3648 = 1.5. Now we know the aspect ratio is 1.5. This tells us that if we wish to print this image on paper, and we don’t wish to crop the image, the paper size must also have a ratio of 1.5. The good news is, a ratio works regardless of the unit of measure. As an example, if the height of the paper is 4 inches, the length will be 4 X 1.5 = 6 inches. If the paper is to be 80 centimeters in height, the length must be 80 X 1.5 = 120 centimeters length. Again, the beauty of an aspect ratio is that it is void of unit of measure; thus it works for all the units. One more example, a giant poster 22 yards high will be 22 X 1.5 = 33 yards long.