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Finding the Third Proportional to 3,188.50 and 3,661

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Solution

The third proportional to 3,188.50 and 3,661 is: 4,203.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,188.50 : 3,661 = 3,661 : x
  2. Step 2: Convert to fraction form
    3,188.50/3,661 = 3,661/x
  3. Step 3: Cross multiply
    3,188.50x = 3,661 × 3,661
  4. Step 4: Simplify right side
    3,188.50x = 13,402,921
  5. Step 5: Solve for x
    x = 13,402,921/3,188.50
  6. Step 6: Final answer
    x = 4,203.52

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Why These Related Problems?

These problems maintain the same ratio (1.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.