Home / 3,949.90-5,450.94-2,181.58

Finding the Fourth Proportional to 3,949.90, 5,450.94 and 2,181.58

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Solution

The fourth proportional to 3,949.90, 5,450.94 and 2,181.58 is: 3,010.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,949.90 : 5,450.94 = 2,181.58 : x
  2. Step 2: Convert to fraction form
    3,949.90/5,450.94 = 2,181.58/x
  3. Step 3: Cross multiply
    3,949.90x = 5,450.94 × 2,181.58
  4. Step 4: Simplify right side
    3,949.90x = 11,891,661.69
  5. Step 5: Solve for x
    x = 11,891,661.69/3,949.90
  6. Step 6: Final answer
    x = 3,010.62

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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.