Home / 3,180.90-4,388.94-2,001.54

Finding the Fourth Proportional to 3,180.90, 4,388.94 and 2,001.54

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Solution

The fourth proportional to 3,180.90, 4,388.94 and 2,001.54 is: 2,761.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,180.90 : 4,388.94 = 2,001.54 : x
  2. Step 2: Convert to fraction form
    3,180.90/4,388.94 = 2,001.54/x
  3. Step 3: Cross multiply
    3,180.90x = 4,388.94 × 2,001.54
  4. Step 4: Simplify right side
    3,180.90x = 8,784,638.97
  5. Step 5: Solve for x
    x = 8,784,638.97/3,180.90
  6. Step 6: Final answer
    x = 2,761.68

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1.5x scale

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.