Home / 3,949.72-5,450.62-2,181.32

Finding the Fourth Proportional to 3,949.72, 5,450.62 and 2,181.32

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Solution

The fourth proportional to 3,949.72, 5,450.62 and 2,181.32 is: 3,010.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,949.72 : 5,450.62 = 2,181.32 : x
  2. Step 2: Convert to fraction form
    3,949.72/5,450.62 = 2,181.32/x
  3. Step 3: Cross multiply
    3,949.72x = 5,450.62 × 2,181.32
  4. Step 4: Simplify right side
    3,949.72x = 11,889,546.42
  5. Step 5: Solve for x
    x = 11,889,546.42/3,949.72
  6. Step 6: Final answer
    x = 3,010.23

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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.