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Finding the Third Proportional to 2,605.61 and 2,939.73

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Solution

The third proportional to 2,605.61 and 2,939.73 is: 3,316.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,605.61 : 2,939.73 = 2,939.73 : x
  2. Step 2: Convert to fraction form
    2,605.61/2,939.73 = 2,939.73/x
  3. Step 3: Cross multiply
    2,605.61x = 2,939.73 × 2,939.73
  4. Step 4: Simplify right side
    2,605.61x = 8,642,015.23
  5. Step 5: Solve for x
    x = 8,642,015.23/2,605.61
  6. Step 6: Final answer
    x = 3,316.70

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Why These Related Problems?

These problems maintain the same ratio (1.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.