Home / 3,898.46-5,379.39-2,219.91

Finding the Fourth Proportional to 3,898.46, 5,379.39 and 2,219.91

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Solution

The fourth proportional to 3,898.46, 5,379.39 and 2,219.91 is: 3,063.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,898.46 : 5,379.39 = 2,219.91 : x
  2. Step 2: Convert to fraction form
    3,898.46/5,379.39 = 2,219.91/x
  3. Step 3: Cross multiply
    3,898.46x = 5,379.39 × 2,219.91
  4. Step 4: Simplify right side
    3,898.46x = 11,941,761.65
  5. Step 5: Solve for x
    x = 11,941,761.65/3,898.46
  6. Step 6: Final answer
    x = 3,063.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.