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Finding the Third Proportional to 3,910 and 4,459

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Solution

The third proportional to 3,910 and 4,459 is: 5,085.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910 : 4,459 = 4,459 : x
  2. Step 2: Convert to fraction form
    3,910/4,459 = 4,459/x
  3. Step 3: Cross multiply
    3,910x = 4,459 × 4,459
  4. Step 4: Simplify right side
    3,910x = 19,882,681
  5. Step 5: Solve for x
    x = 19,882,681/3,910
  6. Step 6: Final answer
    x = 5,085.08

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Why These Related Problems?

These problems maintain the same ratio (1.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.