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Finding the Fourth Proportional to 8,491.90, 12,747.45 and 6,552.70

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Solution

The fourth proportional to 8,491.90, 12,747.45 and 6,552.70 is: 9,836.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,491.90 : 12,747.45 = 6,552.70 : x
  2. Step 2: Convert to fraction form
    8,491.90/12,747.45 = 6,552.70/x
  3. Step 3: Cross multiply
    8,491.90x = 12,747.45 × 6,552.70
  4. Step 4: Simplify right side
    8,491.90x = 83,530,215.62
  5. Step 5: Solve for x
    x = 83,530,215.62/8,491.90
  6. Step 6: Final answer
    x = 9,836.46

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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.