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Finding the Fourth Proportional to 7,751.16, 11,621.16 and 3,800.88

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Solution

The fourth proportional to 7,751.16, 11,621.16 and 3,800.88 is: 5,698.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,751.16 : 11,621.16 = 3,800.88 : x
  2. Step 2: Convert to fraction form
    7,751.16/11,621.16 = 3,800.88/x
  3. Step 3: Cross multiply
    7,751.16x = 11,621.16 × 3,800.88
  4. Step 4: Simplify right side
    7,751.16x = 44,170,634.62
  5. Step 5: Solve for x
    x = 44,170,634.62/7,751.16
  6. Step 6: Final answer
    x = 5,698.58

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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.