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Finding the Fourth Proportional to 8,658.47, 12,985.84 and 2,735.82

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Solution

The fourth proportional to 8,658.47, 12,985.84 and 2,735.82 is: 4,103.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,658.47 : 12,985.84 = 2,735.82 : x
  2. Step 2: Convert to fraction form
    8,658.47/12,985.84 = 2,735.82/x
  3. Step 3: Cross multiply
    8,658.47x = 12,985.84 × 2,735.82
  4. Step 4: Simplify right side
    8,658.47x = 35,526,920.79
  5. Step 5: Solve for x
    x = 35,526,920.79/8,658.47
  6. Step 6: Final answer
    x = 4,103.14

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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.