Home / 3,920.93-5,867.66-2,811.57

Finding the Fourth Proportional to 3,920.93, 5,867.66 and 2,811.57

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Solution

The fourth proportional to 3,920.93, 5,867.66 and 2,811.57 is: 4,207.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,920.93 : 5,867.66 = 2,811.57 : x
  2. Step 2: Convert to fraction form
    3,920.93/5,867.66 = 2,811.57/x
  3. Step 3: Cross multiply
    3,920.93x = 5,867.66 × 2,811.57
  4. Step 4: Simplify right side
    3,920.93x = 16,497,336.83
  5. Step 5: Solve for x
    x = 16,497,336.83/3,920.93
  6. Step 6: Final answer
    x = 4,207.51

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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.