Home / 3,296.20-4,939.80-2,122.60

Finding the Fourth Proportional to 3,296.20, 4,939.80 and 2,122.60

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Solution

The fourth proportional to 3,296.20, 4,939.80 and 2,122.60 is: 3,181.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,296.20 : 4,939.80 = 2,122.60 : x
  2. Step 2: Convert to fraction form
    3,296.20/4,939.80 = 2,122.60/x
  3. Step 3: Cross multiply
    3,296.20x = 4,939.80 × 2,122.60
  4. Step 4: Simplify right side
    3,296.20x = 10,485,219.48
  5. Step 5: Solve for x
    x = 10,485,219.48/3,296.20
  6. Step 6: Final answer
    x = 3,181.00

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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.