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Finding the Third Proportional to 4,165 and 8,945

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Solution

The third proportional to 4,165 and 8,945 is: 19,210.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,165 : 8,945 = 8,945 : x
  2. Step 2: Convert to fraction form
    4,165/8,945 = 8,945/x
  3. Step 3: Cross multiply
    4,165x = 8,945 × 8,945
  4. Step 4: Simplify right side
    4,165x = 80,013,025
  5. Step 5: Solve for x
    x = 80,013,025/4,165
  6. Step 6: Final answer
    x = 19,210.81

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.