Home / 7,131.41-10,694.40-2,855.82

Finding the Fourth Proportional to 7,131.41, 10,694.40 and 2,855.82

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Solution

The fourth proportional to 7,131.41, 10,694.40 and 2,855.82 is: 4,282.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,131.41 : 10,694.40 = 2,855.82 : x
  2. Step 2: Convert to fraction form
    7,131.41/10,694.40 = 2,855.82/x
  3. Step 3: Cross multiply
    7,131.41x = 10,694.40 × 2,855.82
  4. Step 4: Simplify right side
    7,131.41x = 30,541,310.80
  5. Step 5: Solve for x
    x = 30,541,310.80/7,131.41
  6. Step 6: Final answer
    x = 4,282.65

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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.