Home / 3,923.80-5,399.34-3,621.88

Finding the Fourth Proportional to 3,923.80, 5,399.34 and 3,621.88

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Solution

The fourth proportional to 3,923.80, 5,399.34 and 3,621.88 is: 4,983.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,923.80 : 5,399.34 = 3,621.88 : x
  2. Step 2: Convert to fraction form
    3,923.80/5,399.34 = 3,621.88/x
  3. Step 3: Cross multiply
    3,923.80x = 5,399.34 × 3,621.88
  4. Step 4: Simplify right side
    3,923.80x = 19,555,761.56
  5. Step 5: Solve for x
    x = 19,555,761.56/3,923.80
  6. Step 6: Final answer
    x = 4,983.88

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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.