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Finding the Fourth Proportional to 9,179.92, 12,668.02 and 5,201.38

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Solution

The fourth proportional to 9,179.92, 12,668.02 and 5,201.38 is: 7,177.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,179.92 : 12,668.02 = 5,201.38 : x
  2. Step 2: Convert to fraction form
    9,179.92/12,668.02 = 5,201.38/x
  3. Step 3: Cross multiply
    9,179.92x = 12,668.02 × 5,201.38
  4. Step 4: Simplify right side
    9,179.92x = 65,891,185.87
  5. Step 5: Solve for x
    x = 65,891,185.87/9,179.92
  6. Step 6: Final answer
    x = 7,177.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.