Home / 3,949.21-5,449.91-2,270.95

Finding the Fourth Proportional to 3,949.21, 5,449.91 and 2,270.95

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Solution

The fourth proportional to 3,949.21, 5,449.91 and 2,270.95 is: 3,133.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,949.21 : 5,449.91 = 2,270.95 : x
  2. Step 2: Convert to fraction form
    3,949.21/5,449.91 = 2,270.95/x
  3. Step 3: Cross multiply
    3,949.21x = 5,449.91 × 2,270.95
  4. Step 4: Simplify right side
    3,949.21x = 12,376,448.13
  5. Step 5: Solve for x
    x = 12,376,448.13/3,949.21
  6. Step 6: Final answer
    x = 3,133.91

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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.