Home / 3,618.45-4,989.80-2,200.76

Finding the Fourth Proportional to 3,618.45, 4,989.80 and 2,200.76

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Solution

The fourth proportional to 3,618.45, 4,989.80 and 2,200.76 is: 3,034.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,618.45 : 4,989.80 = 2,200.76 : x
  2. Step 2: Convert to fraction form
    3,618.45/4,989.80 = 2,200.76/x
  3. Step 3: Cross multiply
    3,618.45x = 4,989.80 × 2,200.76
  4. Step 4: Simplify right side
    3,618.45x = 10,981,316.30
  5. Step 5: Solve for x
    x = 10,981,316.30/3,618.45
  6. Step 6: Final answer
    x = 3,034.81

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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.