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Finding the Third Proportional to 3,211.21 and 4,060.76

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Solution

The third proportional to 3,211.21 and 4,060.76 is: 5,135.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,211.21 : 4,060.76 = 4,060.76 : x
  2. Step 2: Convert to fraction form
    3,211.21/4,060.76 = 4,060.76/x
  3. Step 3: Cross multiply
    3,211.21x = 4,060.76 × 4,060.76
  4. Step 4: Simplify right side
    3,211.21x = 16,489,754.01
  5. Step 5: Solve for x
    x = 16,489,754.01/3,211.21
  6. Step 6: Final answer
    x = 5,135.06

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Why These Related Problems?

These problems maintain the same ratio (1.26) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.