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Finding the Fourth Proportional to 7,996.91, 11,991.72 and 3,838.88

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Solution

The fourth proportional to 7,996.91, 11,991.72 and 3,838.88 is: 5,756.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,996.91 : 11,991.72 = 3,838.88 : x
  2. Step 2: Convert to fraction form
    7,996.91/11,991.72 = 3,838.88/x
  3. Step 3: Cross multiply
    7,996.91x = 11,991.72 × 3,838.88
  4. Step 4: Simplify right side
    7,996.91x = 46,034,774.07
  5. Step 5: Solve for x
    x = 46,034,774.07/7,996.91
  6. Step 6: Final answer
    x = 5,756.57

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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.