Home / 7,791.09-11,687.67-2,860.79

Finding the Fourth Proportional to 7,791.09, 11,687.67 and 2,860.79

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Solution

The fourth proportional to 7,791.09, 11,687.67 and 2,860.79 is: 4,291.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,791.09 : 11,687.67 = 2,860.79 : x
  2. Step 2: Convert to fraction form
    7,791.09/11,687.67 = 2,860.79/x
  3. Step 3: Cross multiply
    7,791.09x = 11,687.67 × 2,860.79
  4. Step 4: Simplify right side
    7,791.09x = 33,435,955.16
  5. Step 5: Solve for x
    x = 33,435,955.16/7,791.09
  6. Step 6: Final answer
    x = 4,291.56

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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.