Home / 7,869.62-11,811.72-3,976.76

Finding the Fourth Proportional to 7,869.62, 11,811.72 and 3,976.76

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Solution

The fourth proportional to 7,869.62, 11,811.72 and 3,976.76 is: 5,968.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,869.62 : 11,811.72 = 3,976.76 : x
  2. Step 2: Convert to fraction form
    7,869.62/11,811.72 = 3,976.76/x
  3. Step 3: Cross multiply
    7,869.62x = 11,811.72 × 3,976.76
  4. Step 4: Simplify right side
    7,869.62x = 46,972,375.63
  5. Step 5: Solve for x
    x = 46,972,375.63/7,869.62
  6. Step 6: Final answer
    x = 5,968.82

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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.