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Finding the Fourth Proportional to 8,495.47, 12,732.21 and 4,747.15

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Solution

The fourth proportional to 8,495.47, 12,732.21 and 4,747.15 is: 7,114.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,495.47 : 12,732.21 = 4,747.15 : x
  2. Step 2: Convert to fraction form
    8,495.47/12,732.21 = 4,747.15/x
  3. Step 3: Cross multiply
    8,495.47x = 12,732.21 × 4,747.15
  4. Step 4: Simplify right side
    8,495.47x = 60,441,710.70
  5. Step 5: Solve for x
    x = 60,441,710.70/8,495.47
  6. Step 6: Final answer
    x = 7,114.58

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1.5x scale

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.