Home / 7,991.07-11,986.70-3,061

Finding the Fourth Proportional to 7,991.07, 11,986.70 and 3,061

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Solution

The fourth proportional to 7,991.07, 11,986.70 and 3,061 is: 4,591.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,991.07 : 11,986.70 = 3,061 : x
  2. Step 2: Convert to fraction form
    7,991.07/11,986.70 = 3,061/x
  3. Step 3: Cross multiply
    7,991.07x = 11,986.70 × 3,061
  4. Step 4: Simplify right side
    7,991.07x = 36,691,288.70
  5. Step 5: Solve for x
    x = 36,691,288.70/7,991.07
  6. Step 6: Final answer
    x = 4,591.54

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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.