Home / 3,618.82-4,990.39-2,202.70

Finding the Fourth Proportional to 3,618.82, 4,990.39 and 2,202.70

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Solution

The fourth proportional to 3,618.82, 4,990.39 and 2,202.70 is: 3,037.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.82 : 4,990.39 = 2,202.70 : x
  2. Step 2: Convert to fraction form
    3,618.82/4,990.39 = 2,202.70/x
  3. Step 3: Cross multiply
    3,618.82x = 4,990.39 × 2,202.70
  4. Step 4: Simplify right side
    3,618.82x = 10,992,332.05
  5. Step 5: Solve for x
    x = 10,992,332.05/3,618.82
  6. Step 6: Final answer
    x = 3,037.55

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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.