Home / 2,557.28-3,835.84-2,142.56

Finding the Fourth Proportional to 2,557.28, 3,835.84 and 2,142.56

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Solution

The fourth proportional to 2,557.28, 3,835.84 and 2,142.56 is: 3,213.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,557.28 : 3,835.84 = 2,142.56 : x
  2. Step 2: Convert to fraction form
    2,557.28/3,835.84 = 2,142.56/x
  3. Step 3: Cross multiply
    2,557.28x = 3,835.84 × 2,142.56
  4. Step 4: Simplify right side
    2,557.28x = 8,218,517.35
  5. Step 5: Solve for x
    x = 8,218,517.35/2,557.28
  6. Step 6: Final answer
    x = 3,213.77

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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.