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Finding the Third Proportional to 3,481.50 and 4,986

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Solution

The third proportional to 3,481.50 and 4,986 is: 7,140.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,481.50 : 4,986 = 4,986 : x
  2. Step 2: Convert to fraction form
    3,481.50/4,986 = 4,986/x
  3. Step 3: Cross multiply
    3,481.50x = 4,986 × 4,986
  4. Step 4: Simplify right side
    3,481.50x = 24,860,196
  5. Step 5: Solve for x
    x = 24,860,196/3,481.50
  6. Step 6: Final answer
    x = 7,140.66

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.