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Finding the Fourth Proportional to 3,967.72, 5,475.48 and 2,199.44

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Solution

The fourth proportional to 3,967.72, 5,475.48 and 2,199.44 is: 3,035.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,967.72 : 5,475.48 = 2,199.44 : x
  2. Step 2: Convert to fraction form
    3,967.72/5,475.48 = 2,199.44/x
  3. Step 3: Cross multiply
    3,967.72x = 5,475.48 × 2,199.44
  4. Step 4: Simplify right side
    3,967.72x = 12,042,989.73
  5. Step 5: Solve for x
    x = 12,042,989.73/3,967.72
  6. Step 6: Final answer
    x = 3,035.24

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.