Home / 3,138.61-4,328.27-1,879.46

Finding the Fourth Proportional to 3,138.61, 4,328.27 and 1,879.46

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Solution

The fourth proportional to 3,138.61, 4,328.27 and 1,879.46 is: 2,591.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.61 : 4,328.27 = 1,879.46 : x
  2. Step 2: Convert to fraction form
    3,138.61/4,328.27 = 1,879.46/x
  3. Step 3: Cross multiply
    3,138.61x = 4,328.27 × 1,879.46
  4. Step 4: Simplify right side
    3,138.61x = 8,134,800.94
  5. Step 5: Solve for x
    x = 8,134,800.94/3,138.61
  6. Step 6: Final answer
    x = 2,591.85

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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.