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Finding the Third Proportional to 4,107 and 4,485

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Solution

The third proportional to 4,107 and 4,485 is: 4,897.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,107 : 4,485 = 4,485 : x
  2. Step 2: Convert to fraction form
    4,107/4,485 = 4,485/x
  3. Step 3: Cross multiply
    4,107x = 4,485 × 4,485
  4. Step 4: Simplify right side
    4,107x = 20,115,225
  5. Step 5: Solve for x
    x = 20,115,225/4,107
  6. Step 6: Final answer
    x = 4,897.79

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.