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Finding the Third Proportional to 3,910 and 9,260

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Solution

The third proportional to 3,910 and 9,260 is: 21,930.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910 : 9,260 = 9,260 : x
  2. Step 2: Convert to fraction form
    3,910/9,260 = 9,260/x
  3. Step 3: Cross multiply
    3,910x = 9,260 × 9,260
  4. Step 4: Simplify right side
    3,910x = 85,747,600
  5. Step 5: Solve for x
    x = 85,747,600/3,910
  6. Step 6: Final answer
    x = 21,930.33

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Why These Related Problems?

These problems maintain the same ratio (2.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.