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Finding the Fourth Proportional to 7,859.16, 11,791.17 and 2,668.68

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Solution

The fourth proportional to 7,859.16, 11,791.17 and 2,668.68 is: 4,003.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,859.16 : 11,791.17 = 2,668.68 : x
  2. Step 2: Convert to fraction form
    7,859.16/11,791.17 = 2,668.68/x
  3. Step 3: Cross multiply
    7,859.16x = 11,791.17 × 2,668.68
  4. Step 4: Simplify right side
    7,859.16x = 31,466,859.56
  5. Step 5: Solve for x
    x = 31,466,859.56/7,859.16
  6. Step 6: Final answer
    x = 4,003.85

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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.