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Finding the Fourth Proportional to 5,129.91, 7,700.31 and 4,167.63

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Solution

The fourth proportional to 5,129.91, 7,700.31 and 4,167.63 is: 6,255.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,129.91 : 7,700.31 = 4,167.63 : x
  2. Step 2: Convert to fraction form
    5,129.91/7,700.31 = 4,167.63/x
  3. Step 3: Cross multiply
    5,129.91x = 7,700.31 × 4,167.63
  4. Step 4: Simplify right side
    5,129.91x = 32,092,042.97
  5. Step 5: Solve for x
    x = 32,092,042.97/5,129.91
  6. Step 6: Final answer
    x = 6,255.87

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