Home / 1,545.11-2,319.20-723.97

Finding the Fourth Proportional to 1,545.11, 2,319.20 and 723.97

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Solution

The fourth proportional to 1,545.11, 2,319.20 and 723.97 is: 1,086.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,545.11 : 2,319.20 = 723.97 : x
  2. Step 2: Convert to fraction form
    1,545.11/2,319.20 = 723.97/x
  3. Step 3: Cross multiply
    1,545.11x = 2,319.20 × 723.97
  4. Step 4: Simplify right side
    1,545.11x = 1,679,037.29
  5. Step 5: Solve for x
    x = 1,679,037.29/1,545.11
  6. Step 6: Final answer
    x = 1,086.68

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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.