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Finding the Third Proportional to 4,485 and 10,857

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Solution

The third proportional to 4,485 and 10,857 is: 26,281.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,485 : 10,857 = 10,857 : x
  2. Step 2: Convert to fraction form
    4,485/10,857 = 10,857/x
  3. Step 3: Cross multiply
    4,485x = 10,857 × 10,857
  4. Step 4: Simplify right side
    4,485x = 117,874,449
  5. Step 5: Solve for x
    x = 117,874,449/4,485
  6. Step 6: Final answer
    x = 26,281.93

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Why These Related Problems?

These problems maintain the same ratio (2.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.