Home / 942-1,389

Finding the Third Proportional to 942 and 1,389

Calculator

Solution

The third proportional to 942 and 1,389 is: 2,048.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    942 : 1,389 = 1,389 : x
  2. Step 2: Convert to fraction form
    942/1,389 = 1,389/x
  3. Step 3: Cross multiply
    942x = 1,389 × 1,389
  4. Step 4: Simplify right side
    942x = 1,929,321
  5. Step 5: Solve for x
    x = 1,929,321/942
  6. Step 6: Final answer
    x = 2,048.11

Related Problems

Find third proportional to 471 and 694.50
Half scale
Find third proportional to 1,884 and 2,778
Double scale
Find third proportional to 944 and 1,392
Similar ratio
Find third proportional to 1,413 and 2,083.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.