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Finding the Fourth Proportional to 8,429.62, 12,647.70 and 3,498

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Solution

The fourth proportional to 8,429.62, 12,647.70 and 3,498 is: 5,248.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,429.62 : 12,647.70 = 3,498 : x
  2. Step 2: Convert to fraction form
    8,429.62/12,647.70 = 3,498/x
  3. Step 3: Cross multiply
    8,429.62x = 12,647.70 × 3,498
  4. Step 4: Simplify right side
    8,429.62x = 44,241,654.60
  5. Step 5: Solve for x
    x = 44,241,654.60/8,429.62
  6. Step 6: Final answer
    x = 5,248.36

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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.