Home / 3,278.37-4,919.55-2,109.12

Finding the Fourth Proportional to 3,278.37, 4,919.55 and 2,109.12

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Solution

The fourth proportional to 3,278.37, 4,919.55 and 2,109.12 is: 3,164.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,278.37 : 4,919.55 = 2,109.12 : x
  2. Step 2: Convert to fraction form
    3,278.37/4,919.55 = 2,109.12/x
  3. Step 3: Cross multiply
    3,278.37x = 4,919.55 × 2,109.12
  4. Step 4: Simplify right side
    3,278.37x = 10,375,921.30
  5. Step 5: Solve for x
    x = 10,375,921.30/3,278.37
  6. Step 6: Final answer
    x = 3,164.96

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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.