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Finding the Fourth Proportional to 8,601.36, 12,884.76 and 7,279.44

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Solution

The fourth proportional to 8,601.36, 12,884.76 and 7,279.44 is: 10,904.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,601.36 : 12,884.76 = 7,279.44 : x
  2. Step 2: Convert to fraction form
    8,601.36/12,884.76 = 7,279.44/x
  3. Step 3: Cross multiply
    8,601.36x = 12,884.76 × 7,279.44
  4. Step 4: Simplify right side
    8,601.36x = 93,793,837.33
  5. Step 5: Solve for x
    x = 93,793,837.33/8,601.36
  6. Step 6: Final answer
    x = 10,904.54

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1.5x scale

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.