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Finding the Fourth Proportional to 8,791.95, 13,167 and 5,086.38

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Solution

The fourth proportional to 8,791.95, 13,167 and 5,086.38 is: 7,617.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,791.95 : 13,167 = 5,086.38 : x
  2. Step 2: Convert to fraction form
    8,791.95/13,167 = 5,086.38/x
  3. Step 3: Cross multiply
    8,791.95x = 13,167 × 5,086.38
  4. Step 4: Simplify right side
    8,791.95x = 66,972,365.46
  5. Step 5: Solve for x
    x = 66,972,365.46/8,791.95
  6. Step 6: Final answer
    x = 7,617.46

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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.