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Finding the Third Proportional to 3,128 and 6,606

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Solution

The third proportional to 3,128 and 6,606 is: 13,951.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128 : 6,606 = 6,606 : x
  2. Step 2: Convert to fraction form
    3,128/6,606 = 6,606/x
  3. Step 3: Cross multiply
    3,128x = 6,606 × 6,606
  4. Step 4: Simplify right side
    3,128x = 43,639,236
  5. Step 5: Solve for x
    x = 43,639,236/3,128
  6. Step 6: Final answer
    x = 13,951.16

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Why These Related Problems?

These problems maintain the same ratio (2.11) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.