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Finding the Fourth Proportional to 8,587.62, 12,888.72 and 4,694.76

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Solution

The fourth proportional to 8,587.62, 12,888.72 and 4,694.76 is: 7,046.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,587.62 : 12,888.72 = 4,694.76 : x
  2. Step 2: Convert to fraction form
    8,587.62/12,888.72 = 4,694.76/x
  3. Step 3: Cross multiply
    8,587.62x = 12,888.72 × 4,694.76
  4. Step 4: Simplify right side
    8,587.62x = 60,509,447.11
  5. Step 5: Solve for x
    x = 60,509,447.11/8,587.62
  6. Step 6: Final answer
    x = 7,046.13

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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.