Home / 3,989.20-5,983.32-1,067.74

Finding the Fourth Proportional to 3,989.20, 5,983.32 and 1,067.74

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Solution

The fourth proportional to 3,989.20, 5,983.32 and 1,067.74 is: 1,601.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,989.20 : 5,983.32 = 1,067.74 : x
  2. Step 2: Convert to fraction form
    3,989.20/5,983.32 = 1,067.74/x
  3. Step 3: Cross multiply
    3,989.20x = 5,983.32 × 1,067.74
  4. Step 4: Simplify right side
    3,989.20x = 6,388,630.10
  5. Step 5: Solve for x
    x = 6,388,630.10/3,989.20
  6. Step 6: Final answer
    x = 1,601.48

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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.