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Finding the Third Proportional to 3,181.78 and 6,261.05

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Solution

The third proportional to 3,181.78 and 6,261.05 is: 12,320.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,181.78 : 6,261.05 = 6,261.05 : x
  2. Step 2: Convert to fraction form
    3,181.78/6,261.05 = 6,261.05/x
  3. Step 3: Cross multiply
    3,181.78x = 6,261.05 × 6,261.05
  4. Step 4: Simplify right side
    3,181.78x = 39,200,707.97
  5. Step 5: Solve for x
    x = 39,200,707.97/3,181.78
  6. Step 6: Final answer
    x = 12,320.37

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Why These Related Problems?

These problems maintain the same ratio (1.97) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.