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Finding the Fourth Proportional to 7,791.69, 11,687.64 and 2,597.57

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Solution

The fourth proportional to 7,791.69, 11,687.64 and 2,597.57 is: 3,896.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,791.69 : 11,687.64 = 2,597.57 : x
  2. Step 2: Convert to fraction form
    7,791.69/11,687.64 = 2,597.57/x
  3. Step 3: Cross multiply
    7,791.69x = 11,687.64 × 2,597.57
  4. Step 4: Simplify right side
    7,791.69x = 30,359,391.61
  5. Step 5: Solve for x
    x = 30,359,391.61/7,791.69
  6. Step 6: Final answer
    x = 3,896.38

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1.5x scale

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.