Home / 3,278.78-4,921.81-3,227.75

Finding the Fourth Proportional to 3,278.78, 4,921.81 and 3,227.75

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Solution

The fourth proportional to 3,278.78, 4,921.81 and 3,227.75 is: 4,845.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,278.78 : 4,921.81 = 3,227.75 : x
  2. Step 2: Convert to fraction form
    3,278.78/4,921.81 = 3,227.75/x
  3. Step 3: Cross multiply
    3,278.78x = 4,921.81 × 3,227.75
  4. Step 4: Simplify right side
    3,278.78x = 15,886,363.96
  5. Step 5: Solve for x
    x = 15,886,363.96/3,278.78
  6. Step 6: Final answer
    x = 4,845.21

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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.