Home / 931.50-1,390.13

Finding the Third Proportional to 931.50 and 1,390.13

Calculator

Solution

The third proportional to 931.50 and 1,390.13 is: 2,074.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    931.50 : 1,390.13 = 1,390.13 : x
  2. Step 2: Convert to fraction form
    931.50/1,390.13 = 1,390.13/x
  3. Step 3: Cross multiply
    931.50x = 1,390.13 × 1,390.13
  4. Step 4: Simplify right side
    931.50x = 1,932,447.52
  5. Step 5: Solve for x
    x = 1,932,447.52/931.50
  6. Step 6: Final answer
    x = 2,074.55

Related Problems

Find third proportional to 465.75 and 695.06
Half scale
Find third proportional to 1,863 and 2,780.25
Double scale
Find third proportional to 934 and 1,393
Similar ratio
Find third proportional to 1,397.25 and 2,085.19
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.