Home / 3,898.16-5,379.48-2,220.11

Finding the Fourth Proportional to 3,898.16, 5,379.48 and 2,220.11

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Solution

The fourth proportional to 3,898.16, 5,379.48 and 2,220.11 is: 3,063.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,898.16 : 5,379.48 = 2,220.11 : x
  2. Step 2: Convert to fraction form
    3,898.16/5,379.48 = 2,220.11/x
  3. Step 3: Cross multiply
    3,898.16x = 5,379.48 × 2,220.11
  4. Step 4: Simplify right side
    3,898.16x = 11,943,010.45
  5. Step 5: Solve for x
    x = 11,943,010.45/3,898.16
  6. Step 6: Final answer
    x = 3,063.76

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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.