Home / 3,898.22-5,379.69-2,219.91

Finding the Fourth Proportional to 3,898.22, 5,379.69 and 2,219.91

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Solution

The fourth proportional to 3,898.22, 5,379.69 and 2,219.91 is: 3,063.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,898.22 : 5,379.69 = 2,219.91 : x
  2. Step 2: Convert to fraction form
    3,898.22/5,379.69 = 2,219.91/x
  3. Step 3: Cross multiply
    3,898.22x = 5,379.69 × 2,219.91
  4. Step 4: Simplify right side
    3,898.22x = 11,942,427.63
  5. Step 5: Solve for x
    x = 11,942,427.63/3,898.22
  6. Step 6: Final answer
    x = 3,063.56

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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.