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Finding the Third Proportional to 4,245.75 and 6,615

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Solution

The third proportional to 4,245.75 and 6,615 is: 10,306.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,245.75 : 6,615 = 6,615 : x
  2. Step 2: Convert to fraction form
    4,245.75/6,615 = 6,615/x
  3. Step 3: Cross multiply
    4,245.75x = 6,615 × 6,615
  4. Step 4: Simplify right side
    4,245.75x = 43,758,225
  5. Step 5: Solve for x
    x = 43,758,225/4,245.75
  6. Step 6: Final answer
    x = 10,306.36

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.