Home / 3,949.89-5,450.45-2,181.38

Finding the Fourth Proportional to 3,949.89, 5,450.45 and 2,181.38

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Solution

The fourth proportional to 3,949.89, 5,450.45 and 2,181.38 is: 3,010.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,949.89 : 5,450.45 = 2,181.38 : x
  2. Step 2: Convert to fraction form
    3,949.89/5,450.45 = 2,181.38/x
  3. Step 3: Cross multiply
    3,949.89x = 5,450.45 × 2,181.38
  4. Step 4: Simplify right side
    3,949.89x = 11,889,510.46
  5. Step 5: Solve for x
    x = 11,889,510.46/3,949.89
  6. Step 6: Final answer
    x = 3,010.09

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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.