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Finding the Fourth Proportional to 6,600.43, 9,900.79 and 2,217.92

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Solution

The fourth proportional to 6,600.43, 9,900.79 and 2,217.92 is: 3,326.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,600.43 : 9,900.79 = 2,217.92 : x
  2. Step 2: Convert to fraction form
    6,600.43/9,900.79 = 2,217.92/x
  3. Step 3: Cross multiply
    6,600.43x = 9,900.79 × 2,217.92
  4. Step 4: Simplify right side
    6,600.43x = 21,959,167.04
  5. Step 5: Solve for x
    x = 21,959,167.04/6,600.43
  6. Step 6: Final answer
    x = 3,326.93

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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.