Home / 3,278.30-4,912.82-2,789.42

Finding the Fourth Proportional to 3,278.30, 4,912.82 and 2,789.42

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Solution

The fourth proportional to 3,278.30, 4,912.82 and 2,789.42 is: 4,180.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,278.30 : 4,912.82 = 2,789.42 : x
  2. Step 2: Convert to fraction form
    3,278.30/4,912.82 = 2,789.42/x
  3. Step 3: Cross multiply
    3,278.30x = 4,912.82 × 2,789.42
  4. Step 4: Simplify right side
    3,278.30x = 13,703,918.36
  5. Step 5: Solve for x
    x = 13,703,918.36/3,278.30
  6. Step 6: Final answer
    x = 4,180.19

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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.