Home / 1,545.80-2,319.18-724.04

Finding the Fourth Proportional to 1,545.80, 2,319.18 and 724.04

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Solution

The fourth proportional to 1,545.80, 2,319.18 and 724.04 is: 1,086.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,545.80 : 2,319.18 = 724.04 : x
  2. Step 2: Convert to fraction form
    1,545.80/2,319.18 = 724.04/x
  3. Step 3: Cross multiply
    1,545.80x = 2,319.18 × 724.04
  4. Step 4: Simplify right side
    1,545.80x = 1,679,179.09
  5. Step 5: Solve for x
    x = 1,679,179.09/1,545.80
  6. Step 6: Final answer
    x = 1,086.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.