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Finding the Third Proportional to 3,986 and 5,523

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Solution

The third proportional to 3,986 and 5,523 is: 7,652.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986 : 5,523 = 5,523 : x
  2. Step 2: Convert to fraction form
    3,986/5,523 = 5,523/x
  3. Step 3: Cross multiply
    3,986x = 5,523 × 5,523
  4. Step 4: Simplify right side
    3,986x = 30,503,529
  5. Step 5: Solve for x
    x = 30,503,529/3,986
  6. Step 6: Final answer
    x = 7,652.67

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.