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Finding the Third Proportional to 2,217.66 and 3,326.81

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Solution

The third proportional to 2,217.66 and 3,326.81 is: 4,990.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.66 : 3,326.81 = 3,326.81 : x
  2. Step 2: Convert to fraction form
    2,217.66/3,326.81 = 3,326.81/x
  3. Step 3: Cross multiply
    2,217.66x = 3,326.81 × 3,326.81
  4. Step 4: Simplify right side
    2,217.66x = 11,067,681.41
  5. Step 5: Solve for x
    x = 11,067,681.41/2,217.66
  6. Step 6: Final answer
    x = 4,990.71

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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.