Home / 2,220.20-3,076.83-2,188.88

Finding the Fourth Proportional to 2,220.20, 3,076.83 and 2,188.88

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Solution

The fourth proportional to 2,220.20, 3,076.83 and 2,188.88 is: 3,033.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.20 : 3,076.83 = 2,188.88 : x
  2. Step 2: Convert to fraction form
    2,220.20/3,076.83 = 2,188.88/x
  3. Step 3: Cross multiply
    2,220.20x = 3,076.83 × 2,188.88
  4. Step 4: Simplify right side
    2,220.20x = 6,734,785.32
  5. Step 5: Solve for x
    x = 6,734,785.32/2,220.20
  6. Step 6: Final answer
    x = 3,033.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.