Home / 4,113.78-6,168.43-1,920.57

Finding the Fourth Proportional to 4,113.78, 6,168.43 and 1,920.57

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Solution

The fourth proportional to 4,113.78, 6,168.43 and 1,920.57 is: 2,879.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,113.78 : 6,168.43 = 1,920.57 : x
  2. Step 2: Convert to fraction form
    4,113.78/6,168.43 = 1,920.57/x
  3. Step 3: Cross multiply
    4,113.78x = 6,168.43 × 1,920.57
  4. Step 4: Simplify right side
    4,113.78x = 11,846,901.61
  5. Step 5: Solve for x
    x = 11,846,901.61/4,113.78
  6. Step 6: Final answer
    x = 2,879.81

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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.