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Finding the Fourth Proportional to 8,857.66, 13,287.19 and 2,934.31

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Solution

The fourth proportional to 8,857.66, 13,287.19 and 2,934.31 is: 4,401.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,857.66 : 13,287.19 = 2,934.31 : x
  2. Step 2: Convert to fraction form
    8,857.66/13,287.19 = 2,934.31/x
  3. Step 3: Cross multiply
    8,857.66x = 13,287.19 × 2,934.31
  4. Step 4: Simplify right side
    8,857.66x = 38,988,747.65
  5. Step 5: Solve for x
    x = 38,988,747.65/8,857.66
  6. Step 6: Final answer
    x = 4,401.70

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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.