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Finding the Fourth Proportional to 4,918.62, 7,380.32 and 2,453.79

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Solution

The fourth proportional to 4,918.62, 7,380.32 and 2,453.79 is: 3,681.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,918.62 : 7,380.32 = 2,453.79 : x
  2. Step 2: Convert to fraction form
    4,918.62/7,380.32 = 2,453.79/x
  3. Step 3: Cross multiply
    4,918.62x = 7,380.32 × 2,453.79
  4. Step 4: Simplify right side
    4,918.62x = 18,109,770.82
  5. Step 5: Solve for x
    x = 18,109,770.82/4,918.62
  6. Step 6: Final answer
    x = 3,681.88

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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.