Home / 5,169.94-7,138.20-3,181.12

Finding the Fourth Proportional to 5,169.94, 7,138.20 and 3,181.12

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Solution

The fourth proportional to 5,169.94, 7,138.20 and 3,181.12 is: 4,392.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,169.94 : 7,138.20 = 3,181.12 : x
  2. Step 2: Convert to fraction form
    5,169.94/7,138.20 = 3,181.12/x
  3. Step 3: Cross multiply
    5,169.94x = 7,138.20 × 3,181.12
  4. Step 4: Simplify right side
    5,169.94x = 22,707,470.78
  5. Step 5: Solve for x
    x = 22,707,470.78/5,169.94
  6. Step 6: Final answer
    x = 4,392.21

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1.5x scale

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.