Home / 2,278.96-3,144.05-1,393.22

Finding the Fourth Proportional to 2,278.96, 3,144.05 and 1,393.22

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Solution

The fourth proportional to 2,278.96, 3,144.05 and 1,393.22 is: 1,922.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.96 : 3,144.05 = 1,393.22 : x
  2. Step 2: Convert to fraction form
    2,278.96/3,144.05 = 1,393.22/x
  3. Step 3: Cross multiply
    2,278.96x = 3,144.05 × 1,393.22
  4. Step 4: Simplify right side
    2,278.96x = 4,380,354.24
  5. Step 5: Solve for x
    x = 4,380,354.24/2,278.96
  6. Step 6: Final answer
    x = 1,922.09

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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.