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Finding the Fourth Proportional to 6,660.47, 9,981.17 and 4,891.59

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Solution

The fourth proportional to 6,660.47, 9,981.17 and 4,891.59 is: 7,330.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,660.47 : 9,981.17 = 4,891.59 : x
  2. Step 2: Convert to fraction form
    6,660.47/9,981.17 = 4,891.59/x
  3. Step 3: Cross multiply
    6,660.47x = 9,981.17 × 4,891.59
  4. Step 4: Simplify right side
    6,660.47x = 48,823,766.90
  5. Step 5: Solve for x
    x = 48,823,766.90/6,660.47
  6. Step 6: Final answer
    x = 7,330.38

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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.