Home / 3,979.20-5,967.78-1,898.82

Finding the Fourth Proportional to 3,979.20, 5,967.78 and 1,898.82

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Solution

The fourth proportional to 3,979.20, 5,967.78 and 1,898.82 is: 2,847.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,979.20 : 5,967.78 = 1,898.82 : x
  2. Step 2: Convert to fraction form
    3,979.20/5,967.78 = 1,898.82/x
  3. Step 3: Cross multiply
    3,979.20x = 5,967.78 × 1,898.82
  4. Step 4: Simplify right side
    3,979.20x = 11,331,716.11
  5. Step 5: Solve for x
    x = 11,331,716.11/3,979.20
  6. Step 6: Final answer
    x = 2,847.74

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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.