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Finding the Third Proportional to 8,485 and 11,281

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Solution

The third proportional to 8,485 and 11,281 is: 14,998.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,485 : 11,281 = 11,281 : x
  2. Step 2: Convert to fraction form
    8,485/11,281 = 11,281/x
  3. Step 3: Cross multiply
    8,485x = 11,281 × 11,281
  4. Step 4: Simplify right side
    8,485x = 127,260,961
  5. Step 5: Solve for x
    x = 127,260,961/8,485
  6. Step 6: Final answer
    x = 14,998.35

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.