Home / 3,286.20-4,919.70-2,940.60

Finding the Fourth Proportional to 3,286.20, 4,919.70 and 2,940.60

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Solution

The fourth proportional to 3,286.20, 4,919.70 and 2,940.60 is: 4,402.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,286.20 : 4,919.70 = 2,940.60 : x
  2. Step 2: Convert to fraction form
    3,286.20/4,919.70 = 2,940.60/x
  3. Step 3: Cross multiply
    3,286.20x = 4,919.70 × 2,940.60
  4. Step 4: Simplify right side
    3,286.20x = 14,466,869.82
  5. Step 5: Solve for x
    x = 14,466,869.82/3,286.20
  6. Step 6: Final answer
    x = 4,402.31

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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.