Home / 2,738.09-4,103.28-2,118.95

Finding the Fourth Proportional to 2,738.09, 4,103.28 and 2,118.95

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Solution

The fourth proportional to 2,738.09, 4,103.28 and 2,118.95 is: 3,175.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,738.09 : 4,103.28 = 2,118.95 : x
  2. Step 2: Convert to fraction form
    2,738.09/4,103.28 = 2,118.95/x
  3. Step 3: Cross multiply
    2,738.09x = 4,103.28 × 2,118.95
  4. Step 4: Simplify right side
    2,738.09x = 8,694,624.64
  5. Step 5: Solve for x
    x = 8,694,624.64/2,738.09
  6. Step 6: Final answer
    x = 3,175.44

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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.