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Finding the Fourth Proportional to 3,545.69, 5,318.53 and 1,354.64

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Solution

The fourth proportional to 3,545.69, 5,318.53 and 1,354.64 is: 2,031.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,545.69 : 5,318.53 = 1,354.64 : x
  2. Step 2: Convert to fraction form
    3,545.69/5,318.53 = 1,354.64/x
  3. Step 3: Cross multiply
    3,545.69x = 5,318.53 × 1,354.64
  4. Step 4: Simplify right side
    3,545.69x = 7,204,663.50
  5. Step 5: Solve for x
    x = 7,204,663.50/3,545.69
  6. Step 6: Final answer
    x = 2,031.95

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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.