Home / 3,278.56-4,919.21-1,964.85

Finding the Fourth Proportional to 3,278.56, 4,919.21 and 1,964.85

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Solution

The fourth proportional to 3,278.56, 4,919.21 and 1,964.85 is: 2,948.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,278.56 : 4,919.21 = 1,964.85 : x
  2. Step 2: Convert to fraction form
    3,278.56/4,919.21 = 1,964.85/x
  3. Step 3: Cross multiply
    3,278.56x = 4,919.21 × 1,964.85
  4. Step 4: Simplify right side
    3,278.56x = 9,665,509.77
  5. Step 5: Solve for x
    x = 9,665,509.77/3,278.56
  6. Step 6: Final answer
    x = 2,948.10

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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.