Home / 2,839.91-4,256.40-1,520.42

Finding the Fourth Proportional to 2,839.91, 4,256.40 and 1,520.42

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Solution

The fourth proportional to 2,839.91, 4,256.40 and 1,520.42 is: 2,278.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,839.91 : 4,256.40 = 1,520.42 : x
  2. Step 2: Convert to fraction form
    2,839.91/4,256.40 = 1,520.42/x
  3. Step 3: Cross multiply
    2,839.91x = 4,256.40 × 1,520.42
  4. Step 4: Simplify right side
    2,839.91x = 6,471,500.11
  5. Step 5: Solve for x
    x = 6,471,500.11/2,839.91
  6. Step 6: Final answer
    x = 2,278.77

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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.