Home / 2,278.46-3,143.58-1,393.34

Finding the Fourth Proportional to 2,278.46, 3,143.58 and 1,393.34

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Solution

The fourth proportional to 2,278.46, 3,143.58 and 1,393.34 is: 1,922.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,278.46 : 3,143.58 = 1,393.34 : x
  2. Step 2: Convert to fraction form
    2,278.46/3,143.58 = 1,393.34/x
  3. Step 3: Cross multiply
    2,278.46x = 3,143.58 × 1,393.34
  4. Step 4: Simplify right side
    2,278.46x = 4,380,060.04
  5. Step 5: Solve for x
    x = 4,380,060.04/2,278.46
  6. Step 6: Final answer
    x = 1,922.38

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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.