Home / 3,949.49-5,450.30-2,181.11

Finding the Fourth Proportional to 3,949.49, 5,450.30 and 2,181.11

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Solution

The fourth proportional to 3,949.49, 5,450.30 and 2,181.11 is: 3,009.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,949.49 : 5,450.30 = 2,181.11 : x
  2. Step 2: Convert to fraction form
    3,949.49/5,450.30 = 2,181.11/x
  3. Step 3: Cross multiply
    3,949.49x = 5,450.30 × 2,181.11
  4. Step 4: Simplify right side
    3,949.49x = 11,887,665.68
  5. Step 5: Solve for x
    x = 11,887,665.68/3,949.49
  6. Step 6: Final answer
    x = 3,009.93

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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.