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Finding the Fourth Proportional to 3,984.03, 5,497.70 and 2,491.88

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Solution

The fourth proportional to 3,984.03, 5,497.70 and 2,491.88 is: 3,438.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,984.03 : 5,497.70 = 2,491.88 : x
  2. Step 2: Convert to fraction form
    3,984.03/5,497.70 = 2,491.88/x
  3. Step 3: Cross multiply
    3,984.03x = 5,497.70 × 2,491.88
  4. Step 4: Simplify right side
    3,984.03x = 13,699,568.73
  5. Step 5: Solve for x
    x = 13,699,568.73/3,984.03
  6. Step 6: Final answer
    x = 3,438.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.