Home / 980.25-1,439

Finding the Third Proportional to 980.25 and 1,439

Calculator

Solution

The third proportional to 980.25 and 1,439 is: 2,112.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    980.25 : 1,439 = 1,439 : x
  2. Step 2: Convert to fraction form
    980.25/1,439 = 1,439/x
  3. Step 3: Cross multiply
    980.25x = 1,439 × 1,439
  4. Step 4: Simplify right side
    980.25x = 2,070,721
  5. Step 5: Solve for x
    x = 2,070,721/980.25
  6. Step 6: Final answer
    x = 2,112.44

Related Problems

Find third proportional to 490.13 and 719.50
Half scale
Find third proportional to 1,960.50 and 2,878
Double scale
Find third proportional to 982 and 1,442
Similar ratio
Find third proportional to 1,470.38 and 2,158.50
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.