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Finding the Fourth Proportional to 2,098.80, 3,147.99 and 637.97

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Solution

The fourth proportional to 2,098.80, 3,147.99 and 637.97 is: 956.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,098.80 : 3,147.99 = 637.97 : x
  2. Step 2: Convert to fraction form
    2,098.80/3,147.99 = 637.97/x
  3. Step 3: Cross multiply
    2,098.80x = 3,147.99 × 637.97
  4. Step 4: Simplify right side
    2,098.80x = 2,008,307.44
  5. Step 5: Solve for x
    x = 2,008,307.44/2,098.80
  6. Step 6: Final answer
    x = 956.88

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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.