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Finding the Third Proportional to 3,040 and 3,948

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Solution

The third proportional to 3,040 and 3,948 is: 5,127.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,040 : 3,948 = 3,948 : x
  2. Step 2: Convert to fraction form
    3,040/3,948 = 3,948/x
  3. Step 3: Cross multiply
    3,040x = 3,948 × 3,948
  4. Step 4: Simplify right side
    3,040x = 15,586,704
  5. Step 5: Solve for x
    x = 15,586,704/3,040
  6. Step 6: Final answer
    x = 5,127.21

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.