Home / 7,789.26-11,686.31-2,791.68

Finding the Fourth Proportional to 7,789.26, 11,686.31 and 2,791.68

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Solution

The fourth proportional to 7,789.26, 11,686.31 and 2,791.68 is: 4,188.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,789.26 : 11,686.31 = 2,791.68 : x
  2. Step 2: Convert to fraction form
    7,789.26/11,686.31 = 2,791.68/x
  3. Step 3: Cross multiply
    7,789.26x = 11,686.31 × 2,791.68
  4. Step 4: Simplify right side
    7,789.26x = 32,624,437.90
  5. Step 5: Solve for x
    x = 32,624,437.90/7,789.26
  6. Step 6: Final answer
    x = 4,188.39

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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.