Home / 3,380.96-5,067.68-1,405.49

Finding the Fourth Proportional to 3,380.96, 5,067.68 and 1,405.49

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Solution

The fourth proportional to 3,380.96, 5,067.68 and 1,405.49 is: 2,106.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,380.96 : 5,067.68 = 1,405.49 : x
  2. Step 2: Convert to fraction form
    3,380.96/5,067.68 = 1,405.49/x
  3. Step 3: Cross multiply
    3,380.96x = 5,067.68 × 1,405.49
  4. Step 4: Simplify right side
    3,380.96x = 7,122,573.56
  5. Step 5: Solve for x
    x = 7,122,573.56/3,380.96
  6. Step 6: Final answer
    x = 2,106.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.