Home / 3,949.11-5,449.67-2,180.67

Finding the Fourth Proportional to 3,949.11, 5,449.67 and 2,180.67

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Solution

The fourth proportional to 3,949.11, 5,449.67 and 2,180.67 is: 3,009.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,949.11 : 5,449.67 = 2,180.67 : x
  2. Step 2: Convert to fraction form
    3,949.11/5,449.67 = 2,180.67/x
  3. Step 3: Cross multiply
    3,949.11x = 5,449.67 × 2,180.67
  4. Step 4: Simplify right side
    3,949.11x = 11,883,920.98
  5. Step 5: Solve for x
    x = 11,883,920.98/3,949.11
  6. Step 6: Final answer
    x = 3,009.27

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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.