Home / 3,949.40-5,450.03-2,180.97

Finding the Fourth Proportional to 3,949.40, 5,450.03 and 2,180.97

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Solution

The fourth proportional to 3,949.40, 5,450.03 and 2,180.97 is: 3,009.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,949.40 : 5,450.03 = 2,180.97 : x
  2. Step 2: Convert to fraction form
    3,949.40/5,450.03 = 2,180.97/x
  3. Step 3: Cross multiply
    3,949.40x = 5,450.03 × 2,180.97
  4. Step 4: Simplify right side
    3,949.40x = 11,886,349.20
  5. Step 5: Solve for x
    x = 11,886,349.20/3,949.40
  6. Step 6: Final answer
    x = 3,009.66

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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.