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Finding the Fourth Proportional to 3,289.92, 4,935.15 and 1,098.65

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Solution

The fourth proportional to 3,289.92, 4,935.15 and 1,098.65 is: 1,648.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,289.92 : 4,935.15 = 1,098.65 : x
  2. Step 2: Convert to fraction form
    3,289.92/4,935.15 = 1,098.65/x
  3. Step 3: Cross multiply
    3,289.92x = 4,935.15 × 1,098.65
  4. Step 4: Simplify right side
    3,289.92x = 5,421,977.87
  5. Step 5: Solve for x
    x = 5,421,977.87/3,289.92
  6. Step 6: Final answer
    x = 1,648.06

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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.