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Finding the Fourth Proportional to 6,613.72, 9,917.07 and 2,911.66

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Solution

The fourth proportional to 6,613.72, 9,917.07 and 2,911.66 is: 4,365.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,613.72 : 9,917.07 = 2,911.66 : x
  2. Step 2: Convert to fraction form
    6,613.72/9,917.07 = 2,911.66/x
  3. Step 3: Cross multiply
    6,613.72x = 9,917.07 × 2,911.66
  4. Step 4: Simplify right side
    6,613.72x = 28,875,136.04
  5. Step 5: Solve for x
    x = 28,875,136.04/6,613.72
  6. Step 6: Final answer
    x = 4,365.94

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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.