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Finding the Third Proportional to 3,543.19 and 7,759.69

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Solution

The third proportional to 3,543.19 and 7,759.69 is: 16,993.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,543.19 : 7,759.69 = 7,759.69 : x
  2. Step 2: Convert to fraction form
    3,543.19/7,759.69 = 7,759.69/x
  3. Step 3: Cross multiply
    3,543.19x = 7,759.69 × 7,759.69
  4. Step 4: Simplify right side
    3,543.19x = 60,212,750.10
  5. Step 5: Solve for x
    x = 60,212,750.10/3,543.19
  6. Step 6: Final answer
    x = 16,993.95

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.