Home / 7,930.29-11,891.88-2,381.79

Finding the Fourth Proportional to 7,930.29, 11,891.88 and 2,381.79

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Solution

The fourth proportional to 7,930.29, 11,891.88 and 2,381.79 is: 3,571.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,930.29 : 11,891.88 = 2,381.79 : x
  2. Step 2: Convert to fraction form
    7,930.29/11,891.88 = 2,381.79/x
  3. Step 3: Cross multiply
    7,930.29x = 11,891.88 × 2,381.79
  4. Step 4: Simplify right side
    7,930.29x = 28,323,960.87
  5. Step 5: Solve for x
    x = 28,323,960.87/7,930.29
  6. Step 6: Final answer
    x = 3,571.62

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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.