Home / 2,664.12-3,990.24-2,200.80

Finding the Fourth Proportional to 2,664.12, 3,990.24 and 2,200.80

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Solution

The fourth proportional to 2,664.12, 3,990.24 and 2,200.80 is: 3,296.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,664.12 : 3,990.24 = 2,200.80 : x
  2. Step 2: Convert to fraction form
    2,664.12/3,990.24 = 2,200.80/x
  3. Step 3: Cross multiply
    2,664.12x = 3,990.24 × 2,200.80
  4. Step 4: Simplify right side
    2,664.12x = 8,781,720.19
  5. Step 5: Solve for x
    x = 8,781,720.19/2,664.12
  6. Step 6: Final answer
    x = 3,296.29

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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.