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Finding the Fourth Proportional to 6,605.52, 9,909.10 and 2,161.66

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Solution

The fourth proportional to 6,605.52, 9,909.10 and 2,161.66 is: 3,242.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,605.52 : 9,909.10 = 2,161.66 : x
  2. Step 2: Convert to fraction form
    6,605.52/9,909.10 = 2,161.66/x
  3. Step 3: Cross multiply
    6,605.52x = 9,909.10 × 2,161.66
  4. Step 4: Simplify right side
    6,605.52x = 21,420,105.11
  5. Step 5: Solve for x
    x = 21,420,105.11/6,605.52
  6. Step 6: Final answer
    x = 3,242.76

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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.