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Finding the Fourth Proportional to 8,710.78, 13,067.79 and 2,867.62

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Solution

The fourth proportional to 8,710.78, 13,067.79 and 2,867.62 is: 4,301.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,710.78 : 13,067.79 = 2,867.62 : x
  2. Step 2: Convert to fraction form
    8,710.78/13,067.79 = 2,867.62/x
  3. Step 3: Cross multiply
    8,710.78x = 13,067.79 × 2,867.62
  4. Step 4: Simplify right side
    8,710.78x = 37,473,455.96
  5. Step 5: Solve for x
    x = 37,473,455.96/8,710.78
  6. Step 6: Final answer
    x = 4,301.96

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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.