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Finding the Fourth Proportional to 2,006.08, 3,007.08 and 911.22

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Solution

The fourth proportional to 2,006.08, 3,007.08 and 911.22 is: 1,365.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,006.08 : 3,007.08 = 911.22 : x
  2. Step 2: Convert to fraction form
    2,006.08/3,007.08 = 911.22/x
  3. Step 3: Cross multiply
    2,006.08x = 3,007.08 × 911.22
  4. Step 4: Simplify right side
    2,006.08x = 2,740,111.44
  5. Step 5: Solve for x
    x = 2,740,111.44/2,006.08
  6. Step 6: Final answer
    x = 1,365.90

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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.