Home / 3,919.11-5,879.60-1,145.67

Finding the Fourth Proportional to 3,919.11, 5,879.60 and 1,145.67

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Solution

The fourth proportional to 3,919.11, 5,879.60 and 1,145.67 is: 1,718.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,919.11 : 5,879.60 = 1,145.67 : x
  2. Step 2: Convert to fraction form
    3,919.11/5,879.60 = 1,145.67/x
  3. Step 3: Cross multiply
    3,919.11x = 5,879.60 × 1,145.67
  4. Step 4: Simplify right side
    3,919.11x = 6,736,081.33
  5. Step 5: Solve for x
    x = 6,736,081.33/3,919.11
  6. Step 6: Final answer
    x = 1,718.78

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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.