Home / 2,620.80-3,616.74-1,441.92

Finding the Fourth Proportional to 2,620.80, 3,616.74 and 1,441.92

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Solution

The fourth proportional to 2,620.80, 3,616.74 and 1,441.92 is: 1,989.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,620.80 : 3,616.74 = 1,441.92 : x
  2. Step 2: Convert to fraction form
    2,620.80/3,616.74 = 1,441.92/x
  3. Step 3: Cross multiply
    2,620.80x = 3,616.74 × 1,441.92
  4. Step 4: Simplify right side
    2,620.80x = 5,215,049.74
  5. Step 5: Solve for x
    x = 5,215,049.74/2,620.80
  6. Step 6: Final answer
    x = 1,989.87

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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.