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Finding the Third Proportional to 1,666 and 3,400

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Solution

The third proportional to 1,666 and 3,400 is: 6,938.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,666 : 3,400 = 3,400 : x
  2. Step 2: Convert to fraction form
    1,666/3,400 = 3,400/x
  3. Step 3: Cross multiply
    1,666x = 3,400 × 3,400
  4. Step 4: Simplify right side
    1,666x = 11,560,000
  5. Step 5: Solve for x
    x = 11,560,000/1,666
  6. Step 6: Final answer
    x = 6,938.78

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.