Home / 3,278.15-4,919.25-1,330.37

Finding the Fourth Proportional to 3,278.15, 4,919.25 and 1,330.37

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Solution

The fourth proportional to 3,278.15, 4,919.25 and 1,330.37 is: 1,996.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,278.15 : 4,919.25 = 1,330.37 : x
  2. Step 2: Convert to fraction form
    3,278.15/4,919.25 = 1,330.37/x
  3. Step 3: Cross multiply
    3,278.15x = 4,919.25 × 1,330.37
  4. Step 4: Simplify right side
    3,278.15x = 6,544,422.62
  5. Step 5: Solve for x
    x = 6,544,422.62/3,278.15
  6. Step 6: Final answer
    x = 1,996.38

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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.