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Finding the Fourth Proportional to 3,952.90, 5,929.96 and 1,487.90

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Solution

The fourth proportional to 3,952.90, 5,929.96 and 1,487.90 is: 2,232.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,952.90 : 5,929.96 = 1,487.90 : x
  2. Step 2: Convert to fraction form
    3,952.90/5,929.96 = 1,487.90/x
  3. Step 3: Cross multiply
    3,952.90x = 5,929.96 × 1,487.90
  4. Step 4: Simplify right side
    3,952.90x = 8,823,157.83
  5. Step 5: Solve for x
    x = 8,823,157.83/3,952.90
  6. Step 6: Final answer
    x = 2,232.07

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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.