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Finding the Third Proportional to 3,686 and 5,708

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Solution

The third proportional to 3,686 and 5,708 is: 8,839.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,686 : 5,708 = 5,708 : x
  2. Step 2: Convert to fraction form
    3,686/5,708 = 5,708/x
  3. Step 3: Cross multiply
    3,686x = 5,708 × 5,708
  4. Step 4: Simplify right side
    3,686x = 32,581,264
  5. Step 5: Solve for x
    x = 32,581,264/3,686
  6. Step 6: Final answer
    x = 8,839.19

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.