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Finding the Fourth Proportional to 3,565.44, 5,345.28 and 1,487

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Solution

The fourth proportional to 3,565.44, 5,345.28 and 1,487 is: 2,229.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,565.44 : 5,345.28 = 1,487 : x
  2. Step 2: Convert to fraction form
    3,565.44/5,345.28 = 1,487/x
  3. Step 3: Cross multiply
    3,565.44x = 5,345.28 × 1,487
  4. Step 4: Simplify right side
    3,565.44x = 7,948,431.36
  5. Step 5: Solve for x
    x = 7,948,431.36/3,565.44
  6. Step 6: Final answer
    x = 2,229.30

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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.