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Finding the Fourth Proportional to 3,471.76, 5,204.64 and 1,621.96

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Solution

The fourth proportional to 3,471.76, 5,204.64 and 1,621.96 is: 2,431.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,471.76 : 5,204.64 = 1,621.96 : x
  2. Step 2: Convert to fraction form
    3,471.76/5,204.64 = 1,621.96/x
  3. Step 3: Cross multiply
    3,471.76x = 5,204.64 × 1,621.96
  4. Step 4: Simplify right side
    3,471.76x = 8,441,717.89
  5. Step 5: Solve for x
    x = 8,441,717.89/3,471.76
  6. Step 6: Final answer
    x = 2,431.54

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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.