Home / 3,240.86-4,468.29-2,120.02

Finding the Fourth Proportional to 3,240.86, 4,468.29 and 2,120.02

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Solution

The fourth proportional to 3,240.86, 4,468.29 and 2,120.02 is: 2,922.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,240.86 : 4,468.29 = 2,120.02 : x
  2. Step 2: Convert to fraction form
    3,240.86/4,468.29 = 2,120.02/x
  3. Step 3: Cross multiply
    3,240.86x = 4,468.29 × 2,120.02
  4. Step 4: Simplify right side
    3,240.86x = 9,472,845.05
  5. Step 5: Solve for x
    x = 9,472,845.05/3,240.86
  6. Step 6: Final answer
    x = 2,922.95

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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.