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Finding the Fourth Proportional to 6,609.92, 9,911.32 and 2,907.92

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Solution

The fourth proportional to 6,609.92, 9,911.32 and 2,907.92 is: 4,360.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,609.92 : 9,911.32 = 2,907.92 : x
  2. Step 2: Convert to fraction form
    6,609.92/9,911.32 = 2,907.92/x
  3. Step 3: Cross multiply
    6,609.92x = 9,911.32 × 2,907.92
  4. Step 4: Simplify right side
    6,609.92x = 28,821,325.65
  5. Step 5: Solve for x
    x = 28,821,325.65/6,609.92
  6. Step 6: Final answer
    x = 4,360.31

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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.