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Finding the Fourth Proportional to 8,701.39, 13,059 and 3,156.31

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Solution

The fourth proportional to 8,701.39, 13,059 and 3,156.31 is: 4,736.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,701.39 : 13,059 = 3,156.31 : x
  2. Step 2: Convert to fraction form
    8,701.39/13,059 = 3,156.31/x
  3. Step 3: Cross multiply
    8,701.39x = 13,059 × 3,156.31
  4. Step 4: Simplify right side
    8,701.39x = 41,218,252.29
  5. Step 5: Solve for x
    x = 41,218,252.29/8,701.39
  6. Step 6: Final answer
    x = 4,736.97

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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.