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Finding the Third Proportional to 9,728 and 11,136

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Solution

The third proportional to 9,728 and 11,136 is: 12,747.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,728 : 11,136 = 11,136 : x
  2. Step 2: Convert to fraction form
    9,728/11,136 = 11,136/x
  3. Step 3: Cross multiply
    9,728x = 11,136 × 11,136
  4. Step 4: Simplify right side
    9,728x = 124,010,496
  5. Step 5: Solve for x
    x = 124,010,496/9,728
  6. Step 6: Final answer
    x = 12,747.79

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Why These Related Problems?

These problems maintain the same ratio (1.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.