Home / 3,949.29-5,450.07-2,180.90

Finding the Fourth Proportional to 3,949.29, 5,450.07 and 2,180.90

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Solution

The fourth proportional to 3,949.29, 5,450.07 and 2,180.90 is: 3,009.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,949.29 : 5,450.07 = 2,180.90 : x
  2. Step 2: Convert to fraction form
    3,949.29/5,450.07 = 2,180.90/x
  3. Step 3: Cross multiply
    3,949.29x = 5,450.07 × 2,180.90
  4. Step 4: Simplify right side
    3,949.29x = 11,886,057.66
  5. Step 5: Solve for x
    x = 11,886,057.66/3,949.29
  6. Step 6: Final answer
    x = 3,009.67

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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.