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Finding the Fourth Proportional to 3,280.69, 4,921.04 and 1,332.44

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Solution

The fourth proportional to 3,280.69, 4,921.04 and 1,332.44 is: 1,998.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,280.69 : 4,921.04 = 1,332.44 : x
  2. Step 2: Convert to fraction form
    3,280.69/4,921.04 = 1,332.44/x
  3. Step 3: Cross multiply
    3,280.69x = 4,921.04 × 1,332.44
  4. Step 4: Simplify right side
    3,280.69x = 6,556,990.54
  5. Step 5: Solve for x
    x = 6,556,990.54/3,280.69
  6. Step 6: Final answer
    x = 1,998.66

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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.