Home / 3,898.16-5,379.77-2,220.08

Finding the Fourth Proportional to 3,898.16, 5,379.77 and 2,220.08

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Solution

The fourth proportional to 3,898.16, 5,379.77 and 2,220.08 is: 3,063.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,898.16 : 5,379.77 = 2,220.08 : x
  2. Step 2: Convert to fraction form
    3,898.16/5,379.77 = 2,220.08/x
  3. Step 3: Cross multiply
    3,898.16x = 5,379.77 × 2,220.08
  4. Step 4: Simplify right side
    3,898.16x = 11,943,481.78
  5. Step 5: Solve for x
    x = 11,943,481.78/3,898.16
  6. Step 6: Final answer
    x = 3,063.88

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1.5x scale

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.