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Finding the Third Proportional to 3,655.50 and 8,678.75

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Solution

The third proportional to 3,655.50 and 8,678.75 is: 20,604.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,655.50 : 8,678.75 = 8,678.75 : x
  2. Step 2: Convert to fraction form
    3,655.50/8,678.75 = 8,678.75/x
  3. Step 3: Cross multiply
    3,655.50x = 8,678.75 × 8,678.75
  4. Step 4: Simplify right side
    3,655.50x = 75,320,701.56
  5. Step 5: Solve for x
    x = 75,320,701.56/3,655.50
  6. Step 6: Final answer
    x = 20,604.76

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Why These Related Problems?

These problems maintain the same ratio (2.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.