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Finding the Fourth Proportional to 7,605.35, 11,405.12 and 3,655.52

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Solution

The fourth proportional to 7,605.35, 11,405.12 and 3,655.52 is: 5,481.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,605.35 : 11,405.12 = 3,655.52 : x
  2. Step 2: Convert to fraction form
    7,605.35/11,405.12 = 3,655.52/x
  3. Step 3: Cross multiply
    7,605.35x = 11,405.12 × 3,655.52
  4. Step 4: Simplify right side
    7,605.35x = 41,691,568.96
  5. Step 5: Solve for x
    x = 41,691,568.96/7,605.35
  6. Step 6: Final answer
    x = 5,481.88

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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.