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Finding the Fourth Proportional to 6,221.88, 9,327.06 and 2,115

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Solution

The fourth proportional to 6,221.88, 9,327.06 and 2,115 is: 3,170.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,221.88 : 9,327.06 = 2,115 : x
  2. Step 2: Convert to fraction form
    6,221.88/9,327.06 = 2,115/x
  3. Step 3: Cross multiply
    6,221.88x = 9,327.06 × 2,115
  4. Step 4: Simplify right side
    6,221.88x = 19,726,731.90
  5. Step 5: Solve for x
    x = 19,726,731.90/6,221.88
  6. Step 6: Final answer
    x = 3,170.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.