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Finding the Fourth Proportional to 2,680.08, 4,019.80 and 732.42

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Solution

The fourth proportional to 2,680.08, 4,019.80 and 732.42 is: 1,098.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,680.08 : 4,019.80 = 732.42 : x
  2. Step 2: Convert to fraction form
    2,680.08/4,019.80 = 732.42/x
  3. Step 3: Cross multiply
    2,680.08x = 4,019.80 × 732.42
  4. Step 4: Simplify right side
    2,680.08x = 2,944,181.92
  5. Step 5: Solve for x
    x = 2,944,181.92/2,680.08
  6. Step 6: Final answer
    x = 1,098.54

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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.