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Finding the Third Proportional to 7,911 and 9,351

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Solution

The third proportional to 7,911 and 9,351 is: 11,053.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,911 : 9,351 = 9,351 : x
  2. Step 2: Convert to fraction form
    7,911/9,351 = 9,351/x
  3. Step 3: Cross multiply
    7,911x = 9,351 × 9,351
  4. Step 4: Simplify right side
    7,911x = 87,441,201
  5. Step 5: Solve for x
    x = 87,441,201/7,911
  6. Step 6: Final answer
    x = 11,053.12

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Why These Related Problems?

These problems maintain the same ratio (1.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.