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Finding the Third Proportional to 3,082 and 4,120

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Solution

The third proportional to 3,082 and 4,120 is: 5,507.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,082 : 4,120 = 4,120 : x
  2. Step 2: Convert to fraction form
    3,082/4,120 = 4,120/x
  3. Step 3: Cross multiply
    3,082x = 4,120 × 4,120
  4. Step 4: Simplify right side
    3,082x = 16,974,400
  5. Step 5: Solve for x
    x = 16,974,400/3,082
  6. Step 6: Final answer
    x = 5,507.59

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Why These Related Problems?

These problems maintain the same ratio (1.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.