Home / 3,180.33-4,388.94-1,921.61

Finding the Fourth Proportional to 3,180.33, 4,388.94 and 1,921.61

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Solution

The fourth proportional to 3,180.33, 4,388.94 and 1,921.61 is: 2,651.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,180.33 : 4,388.94 = 1,921.61 : x
  2. Step 2: Convert to fraction form
    3,180.33/4,388.94 = 1,921.61/x
  3. Step 3: Cross multiply
    3,180.33x = 4,388.94 × 1,921.61
  4. Step 4: Simplify right side
    3,180.33x = 8,433,809.05
  5. Step 5: Solve for x
    x = 8,433,809.05/3,180.33
  6. Step 6: Final answer
    x = 2,651.87

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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.