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Finding the Fourth Proportional to 3,929.88, 5,892.99 and 2,697.48

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Solution

The fourth proportional to 3,929.88, 5,892.99 and 2,697.48 is: 4,044.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,929.88 : 5,892.99 = 2,697.48 : x
  2. Step 2: Convert to fraction form
    3,929.88/5,892.99 = 2,697.48/x
  3. Step 3: Cross multiply
    3,929.88x = 5,892.99 × 2,697.48
  4. Step 4: Simplify right side
    3,929.88x = 15,896,222.67
  5. Step 5: Solve for x
    x = 15,896,222.67/3,929.88
  6. Step 6: Final answer
    x = 4,044.96

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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.