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Finding the Fourth Proportional to 8,710.87, 13,066.31 and 2,869.15

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Solution

The fourth proportional to 8,710.87, 13,066.31 and 2,869.15 is: 4,303.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,710.87 : 13,066.31 = 2,869.15 : x
  2. Step 2: Convert to fraction form
    8,710.87/13,066.31 = 2,869.15/x
  3. Step 3: Cross multiply
    8,710.87x = 13,066.31 × 2,869.15
  4. Step 4: Simplify right side
    8,710.87x = 37,489,188.99
  5. Step 5: Solve for x
    x = 37,489,188.99/8,710.87
  6. Step 6: Final answer
    x = 4,303.73

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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.