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Finding the Fourth Proportional to 8,658.28, 12,966.60 and 4,949.26

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Solution

The fourth proportional to 8,658.28, 12,966.60 and 4,949.26 is: 7,411.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,658.28 : 12,966.60 = 4,949.26 : x
  2. Step 2: Convert to fraction form
    8,658.28/12,966.60 = 4,949.26/x
  3. Step 3: Cross multiply
    8,658.28x = 12,966.60 × 4,949.26
  4. Step 4: Simplify right side
    8,658.28x = 64,175,074.72
  5. Step 5: Solve for x
    x = 64,175,074.72/8,658.28
  6. Step 6: Final answer
    x = 7,411.99

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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.