Home / 4,139.91-5,704.43-2,811.31

Finding the Fourth Proportional to 4,139.91, 5,704.43 and 2,811.31

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Solution

The fourth proportional to 4,139.91, 5,704.43 and 2,811.31 is: 3,873.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,139.91 : 5,704.43 = 2,811.31 : x
  2. Step 2: Convert to fraction form
    4,139.91/5,704.43 = 2,811.31/x
  3. Step 3: Cross multiply
    4,139.91x = 5,704.43 × 2,811.31
  4. Step 4: Simplify right side
    4,139.91x = 16,036,892.79
  5. Step 5: Solve for x
    x = 16,036,892.79/4,139.91
  6. Step 6: Final answer
    x = 3,873.73

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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.