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Finding the Third Proportional to 3,936 and 8,396

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Solution

The third proportional to 3,936 and 8,396 is: 17,909.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,936 : 8,396 = 8,396 : x
  2. Step 2: Convert to fraction form
    3,936/8,396 = 8,396/x
  3. Step 3: Cross multiply
    3,936x = 8,396 × 8,396
  4. Step 4: Simplify right side
    3,936x = 70,492,816
  5. Step 5: Solve for x
    x = 70,492,816/3,936
  6. Step 6: Final answer
    x = 17,909.76

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.