Home / 3,898.17-5,379.48-2,220.12

Finding the Fourth Proportional to 3,898.17, 5,379.48 and 2,220.12

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Solution

The fourth proportional to 3,898.17, 5,379.48 and 2,220.12 is: 3,063.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,898.17 : 5,379.48 = 2,220.12 : x
  2. Step 2: Convert to fraction form
    3,898.17/5,379.48 = 2,220.12/x
  3. Step 3: Cross multiply
    3,898.17x = 5,379.48 × 2,220.12
  4. Step 4: Simplify right side
    3,898.17x = 11,943,091.14
  5. Step 5: Solve for x
    x = 11,943,091.14/3,898.17
  6. Step 6: Final answer
    x = 3,063.77

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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.