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Finding the Third Proportional to 3,986 and 8,758

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Solution

The third proportional to 3,986 and 8,758 is: 19,242.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986 : 8,758 = 8,758 : x
  2. Step 2: Convert to fraction form
    3,986/8,758 = 8,758/x
  3. Step 3: Cross multiply
    3,986x = 8,758 × 8,758
  4. Step 4: Simplify right side
    3,986x = 76,702,564
  5. Step 5: Solve for x
    x = 76,702,564/3,986
  6. Step 6: Final answer
    x = 19,242.99

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.