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Finding the Fourth Proportional to 6,612.42, 9,920.10 and 2,229.66

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Solution

The fourth proportional to 6,612.42, 9,920.10 and 2,229.66 is: 3,344.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,612.42 : 9,920.10 = 2,229.66 : x
  2. Step 2: Convert to fraction form
    6,612.42/9,920.10 = 2,229.66/x
  3. Step 3: Cross multiply
    6,612.42x = 9,920.10 × 2,229.66
  4. Step 4: Simplify right side
    6,612.42x = 22,118,450.17
  5. Step 5: Solve for x
    x = 22,118,450.17/6,612.42
  6. Step 6: Final answer
    x = 3,344.99

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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.