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Finding the Third Proportional to 2,940.38 and 6,456.75

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Solution

The third proportional to 2,940.38 and 6,456.75 is: 14,178.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,940.38 : 6,456.75 = 6,456.75 : x
  2. Step 2: Convert to fraction form
    2,940.38/6,456.75 = 6,456.75/x
  3. Step 3: Cross multiply
    2,940.38x = 6,456.75 × 6,456.75
  4. Step 4: Simplify right side
    2,940.38x = 41,689,620.56
  5. Step 5: Solve for x
    x = 41,689,620.56/2,940.38
  6. Step 6: Final answer
    x = 14,178.33

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.