Home / 3,949.85-5,450.80-2,181.46

Finding the Fourth Proportional to 3,949.85, 5,450.80 and 2,181.46

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Solution

The fourth proportional to 3,949.85, 5,450.80 and 2,181.46 is: 3,010.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,949.85 : 5,450.80 = 2,181.46 : x
  2. Step 2: Convert to fraction form
    3,949.85/5,450.80 = 2,181.46/x
  3. Step 3: Cross multiply
    3,949.85x = 5,450.80 × 2,181.46
  4. Step 4: Simplify right side
    3,949.85x = 11,890,683.09
  5. Step 5: Solve for x
    x = 11,890,683.09/3,949.85
  6. Step 6: Final answer
    x = 3,010.41

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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.