Home / 2,202.20-3,308.10-2,120.60

Finding the Fourth Proportional to 2,202.20, 3,308.10 and 2,120.60

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Solution

The fourth proportional to 2,202.20, 3,308.10 and 2,120.60 is: 3,185.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,202.20 : 3,308.10 = 2,120.60 : x
  2. Step 2: Convert to fraction form
    2,202.20/3,308.10 = 2,120.60/x
  3. Step 3: Cross multiply
    2,202.20x = 3,308.10 × 2,120.60
  4. Step 4: Simplify right side
    2,202.20x = 7,015,156.86
  5. Step 5: Solve for x
    x = 7,015,156.86/2,202.20
  6. Step 6: Final answer
    x = 3,185.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.