Home / 4,138.95-6,208.43-2,911.85

Finding the Fourth Proportional to 4,138.95, 6,208.43 and 2,911.85

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Solution

The fourth proportional to 4,138.95, 6,208.43 and 2,911.85 is: 4,367.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,138.95 : 6,208.43 = 2,911.85 : x
  2. Step 2: Convert to fraction form
    4,138.95/6,208.43 = 2,911.85/x
  3. Step 3: Cross multiply
    4,138.95x = 6,208.43 × 2,911.85
  4. Step 4: Simplify right side
    4,138.95x = 18,078,016.90
  5. Step 5: Solve for x
    x = 18,078,016.90/4,138.95
  6. Step 6: Final answer
    x = 4,367.78

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Similar ratio
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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.