Home / 2,816.20-4,224.60-2,198.70

Finding the Fourth Proportional to 2,816.20, 4,224.60 and 2,198.70

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Solution

The fourth proportional to 2,816.20, 4,224.60 and 2,198.70 is: 3,298.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,816.20 : 4,224.60 = 2,198.70 : x
  2. Step 2: Convert to fraction form
    2,816.20/4,224.60 = 2,198.70/x
  3. Step 3: Cross multiply
    2,816.20x = 4,224.60 × 2,198.70
  4. Step 4: Simplify right side
    2,816.20x = 9,288,628.02
  5. Step 5: Solve for x
    x = 9,288,628.02/2,816.20
  6. Step 6: Final answer
    x = 3,298.28

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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.