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Finding the Fourth Proportional to 8,711.66, 13,067.64 and 2,789.66

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Solution

The fourth proportional to 8,711.66, 13,067.64 and 2,789.66 is: 4,184.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,711.66 : 13,067.64 = 2,789.66 : x
  2. Step 2: Convert to fraction form
    8,711.66/13,067.64 = 2,789.66/x
  3. Step 3: Cross multiply
    8,711.66x = 13,067.64 × 2,789.66
  4. Step 4: Simplify right side
    8,711.66x = 36,454,305.27
  5. Step 5: Solve for x
    x = 36,454,305.27/8,711.66
  6. Step 6: Final answer
    x = 4,184.54

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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.