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Finding the Fourth Proportional to 6,441.61, 8,891.17 and 3,789.87

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Solution

The fourth proportional to 6,441.61, 8,891.17 and 3,789.87 is: 5,231.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,441.61 : 8,891.17 = 3,789.87 : x
  2. Step 2: Convert to fraction form
    6,441.61/8,891.17 = 3,789.87/x
  3. Step 3: Cross multiply
    6,441.61x = 8,891.17 × 3,789.87
  4. Step 4: Simplify right side
    6,441.61x = 33,696,423.63
  5. Step 5: Solve for x
    x = 33,696,423.63/6,441.61
  6. Step 6: Final answer
    x = 5,231.06

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.