Home / 2,278.31-3,144.20-1,394.28

Finding the Fourth Proportional to 2,278.31, 3,144.20 and 1,394.28

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Solution

The fourth proportional to 2,278.31, 3,144.20 and 1,394.28 is: 1,924.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.31 : 3,144.20 = 1,394.28 : x
  2. Step 2: Convert to fraction form
    2,278.31/3,144.20 = 1,394.28/x
  3. Step 3: Cross multiply
    2,278.31x = 3,144.20 × 1,394.28
  4. Step 4: Simplify right side
    2,278.31x = 4,383,896.05
  5. Step 5: Solve for x
    x = 4,383,896.05/2,278.31
  6. Step 6: Final answer
    x = 1,924.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.