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Finding the Fourth Proportional to 4,984.68, 7,474.98 and 3,660.21

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Solution

The fourth proportional to 4,984.68, 7,474.98 and 3,660.21 is: 5,488.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,984.68 : 7,474.98 = 3,660.21 : x
  2. Step 2: Convert to fraction form
    4,984.68/7,474.98 = 3,660.21/x
  3. Step 3: Cross multiply
    4,984.68x = 7,474.98 × 3,660.21
  4. Step 4: Simplify right side
    4,984.68x = 27,359,996.55
  5. Step 5: Solve for x
    x = 27,359,996.55/4,984.68
  6. Step 6: Final answer
    x = 5,488.82

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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.