Home / 7,940.85-11,910.36-2,097.92

Finding the Fourth Proportional to 7,940.85, 11,910.36 and 2,097.92

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Solution

The fourth proportional to 7,940.85, 11,910.36 and 2,097.92 is: 3,146.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,940.85 : 11,910.36 = 2,097.92 : x
  2. Step 2: Convert to fraction form
    7,940.85/11,910.36 = 2,097.92/x
  3. Step 3: Cross multiply
    7,940.85x = 11,910.36 × 2,097.92
  4. Step 4: Simplify right side
    7,940.85x = 24,986,912.41
  5. Step 5: Solve for x
    x = 24,986,912.41/7,940.85
  6. Step 6: Final answer
    x = 3,146.63

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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.