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Finding the Fourth Proportional to 11,407.92, 17,109.48 and 3,198

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Solution

The fourth proportional to 11,407.92, 17,109.48 and 3,198 is: 4,796.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,407.92 : 17,109.48 = 3,198 : x
  2. Step 2: Convert to fraction form
    11,407.92/17,109.48 = 3,198/x
  3. Step 3: Cross multiply
    11,407.92x = 17,109.48 × 3,198
  4. Step 4: Simplify right side
    11,407.92x = 54,716,117.04
  5. Step 5: Solve for x
    x = 54,716,117.04/11,407.92
  6. Step 6: Final answer
    x = 4,796.33

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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.