Home / 3,898.88-5,380.59-2,220.54

Finding the Fourth Proportional to 3,898.88, 5,380.59 and 2,220.54

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Solution

The fourth proportional to 3,898.88, 5,380.59 and 2,220.54 is: 3,064.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,898.88 : 5,380.59 = 2,220.54 : x
  2. Step 2: Convert to fraction form
    3,898.88/5,380.59 = 2,220.54/x
  3. Step 3: Cross multiply
    3,898.88x = 5,380.59 × 2,220.54
  4. Step 4: Simplify right side
    3,898.88x = 11,947,815.32
  5. Step 5: Solve for x
    x = 11,947,815.32/3,898.88
  6. Step 6: Final answer
    x = 3,064.42

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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.