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Finding the Fourth Proportional to 3,908.80, 5,866.44 and 3,500.56

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Solution

The fourth proportional to 3,908.80, 5,866.44 and 3,500.56 is: 5,253.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,908.80 : 5,866.44 = 3,500.56 : x
  2. Step 2: Convert to fraction form
    3,908.80/5,866.44 = 3,500.56/x
  3. Step 3: Cross multiply
    3,908.80x = 5,866.44 × 3,500.56
  4. Step 4: Simplify right side
    3,908.80x = 20,535,825.21
  5. Step 5: Solve for x
    x = 20,535,825.21/3,908.80
  6. Step 6: Final answer
    x = 5,253.74

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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.