Home / 2,589.60-3,880.44-1,939.92

Finding the Fourth Proportional to 2,589.60, 3,880.44 and 1,939.92

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Solution

The fourth proportional to 2,589.60, 3,880.44 and 1,939.92 is: 2,906.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,589.60 : 3,880.44 = 1,939.92 : x
  2. Step 2: Convert to fraction form
    2,589.60/3,880.44 = 1,939.92/x
  3. Step 3: Cross multiply
    2,589.60x = 3,880.44 × 1,939.92
  4. Step 4: Simplify right side
    2,589.60x = 7,527,743.16
  5. Step 5: Solve for x
    x = 7,527,743.16/2,589.60
  6. Step 6: Final answer
    x = 2,906.91

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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.