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Finding the Fourth Proportional to 7,757.39, 11,629.49 and 3,080.69

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Solution

The fourth proportional to 7,757.39, 11,629.49 and 3,080.69 is: 4,618.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,757.39 : 11,629.49 = 3,080.69 : x
  2. Step 2: Convert to fraction form
    7,757.39/11,629.49 = 3,080.69/x
  3. Step 3: Cross multiply
    7,757.39x = 11,629.49 × 3,080.69
  4. Step 4: Simplify right side
    7,757.39x = 35,826,803.10
  5. Step 5: Solve for x
    x = 35,826,803.10/7,757.39
  6. Step 6: Final answer
    x = 4,618.41

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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.