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Finding the Third Proportional to 6,261.50 and 13,779

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Solution

The third proportional to 6,261.50 and 13,779 is: 30,321.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,261.50 : 13,779 = 13,779 : x
  2. Step 2: Convert to fraction form
    6,261.50/13,779 = 13,779/x
  3. Step 3: Cross multiply
    6,261.50x = 13,779 × 13,779
  4. Step 4: Simplify right side
    6,261.50x = 189,860,841
  5. Step 5: Solve for x
    x = 189,860,841/6,261.50
  6. Step 6: Final answer
    x = 30,321.94

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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.