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Finding the Fourth Proportional to 8,651.38, 11,939.79 and 5,296.41

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Solution

The fourth proportional to 8,651.38, 11,939.79 and 5,296.41 is: 7,309.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,651.38 : 11,939.79 = 5,296.41 : x
  2. Step 2: Convert to fraction form
    8,651.38/11,939.79 = 5,296.41/x
  3. Step 3: Cross multiply
    8,651.38x = 11,939.79 × 5,296.41
  4. Step 4: Simplify right side
    8,651.38x = 63,238,023.15
  5. Step 5: Solve for x
    x = 63,238,023.15/8,651.38
  6. Step 6: Final answer
    x = 7,309.59

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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.