Home / 1,132.15-1,562.20-739.30

Finding the Fourth Proportional to 1,132.15, 1,562.20 and 739.30

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Solution

The fourth proportional to 1,132.15, 1,562.20 and 739.30 is: 1,020.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,132.15 : 1,562.20 = 739.30 : x
  2. Step 2: Convert to fraction form
    1,132.15/1,562.20 = 739.30/x
  3. Step 3: Cross multiply
    1,132.15x = 1,562.20 × 739.30
  4. Step 4: Simplify right side
    1,132.15x = 1,154,934.46
  5. Step 5: Solve for x
    x = 1,154,934.46/1,132.15
  6. Step 6: Final answer
    x = 1,020.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.