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Finding the Third Proportional to 3,986 and 8,732

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Solution

The third proportional to 3,986 and 8,732 is: 19,128.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,986 : 8,732 = 8,732 : x
  2. Step 2: Convert to fraction form
    3,986/8,732 = 8,732/x
  3. Step 3: Cross multiply
    3,986x = 8,732 × 8,732
  4. Step 4: Simplify right side
    3,986x = 76,247,824
  5. Step 5: Solve for x
    x = 76,247,824/3,986
  6. Step 6: Final answer
    x = 19,128.91

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.