Home / 5,198.92-7,800.32-3,120.41

Finding the Fourth Proportional to 5,198.92, 7,800.32 and 3,120.41

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Solution

The fourth proportional to 5,198.92, 7,800.32 and 3,120.41 is: 4,681.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,198.92 : 7,800.32 = 3,120.41 : x
  2. Step 2: Convert to fraction form
    5,198.92/7,800.32 = 3,120.41/x
  3. Step 3: Cross multiply
    5,198.92x = 7,800.32 × 3,120.41
  4. Step 4: Simplify right side
    5,198.92x = 24,340,200.43
  5. Step 5: Solve for x
    x = 24,340,200.43/5,198.92
  6. Step 6: Final answer
    x = 4,681.78

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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.