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Finding the Fourth Proportional to 5,125.86, 7,679.12 and 2,927.97

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Solution

The fourth proportional to 5,125.86, 7,679.12 and 2,927.97 is: 4,386.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,125.86 : 7,679.12 = 2,927.97 : x
  2. Step 2: Convert to fraction form
    5,125.86/7,679.12 = 2,927.97/x
  3. Step 3: Cross multiply
    5,125.86x = 7,679.12 × 2,927.97
  4. Step 4: Simplify right side
    5,125.86x = 22,484,218.35
  5. Step 5: Solve for x
    x = 22,484,218.35/5,125.86
  6. Step 6: Final answer
    x = 4,386.43

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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.