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Finding the Third Proportional to 939.75 and 2,217.38

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Solution

The third proportional to 939.75 and 2,217.38 is: 5,231.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    939.75 : 2,217.38 = 2,217.38 : x
  2. Step 2: Convert to fraction form
    939.75/2,217.38 = 2,217.38/x
  3. Step 3: Cross multiply
    939.75x = 2,217.38 × 2,217.38
  4. Step 4: Simplify right side
    939.75x = 4,916,751.89
  5. Step 5: Solve for x
    x = 4,916,751.89/939.75
  6. Step 6: Final answer
    x = 5,231.98

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Why These Related Problems?

These problems maintain the same ratio (2.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.