Home / 3,949.49-5,450.14-2,181.06

Finding the Fourth Proportional to 3,949.49, 5,450.14 and 2,181.06

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Solution

The fourth proportional to 3,949.49, 5,450.14 and 2,181.06 is: 3,009.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,949.49 : 5,450.14 = 2,181.06 : x
  2. Step 2: Convert to fraction form
    3,949.49/5,450.14 = 2,181.06/x
  3. Step 3: Cross multiply
    3,949.49x = 5,450.14 × 2,181.06
  4. Step 4: Simplify right side
    3,949.49x = 11,887,072.81
  5. Step 5: Solve for x
    x = 11,887,072.81/3,949.49
  6. Step 6: Final answer
    x = 3,009.77

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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.