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Finding the Third Proportional to 3,915.88 and 8,610.24

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Solution

The third proportional to 3,915.88 and 8,610.24 is: 18,932.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,915.88 : 8,610.24 = 8,610.24 : x
  2. Step 2: Convert to fraction form
    3,915.88/8,610.24 = 8,610.24/x
  3. Step 3: Cross multiply
    3,915.88x = 8,610.24 × 8,610.24
  4. Step 4: Simplify right side
    3,915.88x = 74,136,312.57
  5. Step 5: Solve for x
    x = 74,136,312.57/3,915.88
  6. Step 6: Final answer
    x = 18,932.21

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.