Home / 3,418.32-5,115.86-2,168.32

Finding the Fourth Proportional to 3,418.32, 5,115.86 and 2,168.32

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Solution

The fourth proportional to 3,418.32, 5,115.86 and 2,168.32 is: 3,245.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,418.32 : 5,115.86 = 2,168.32 : x
  2. Step 2: Convert to fraction form
    3,418.32/5,115.86 = 2,168.32/x
  3. Step 3: Cross multiply
    3,418.32x = 5,115.86 × 2,168.32
  4. Step 4: Simplify right side
    3,418.32x = 11,092,815.65
  5. Step 5: Solve for x
    x = 11,092,815.65/3,418.32
  6. Step 6: Final answer
    x = 3,245.11

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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.