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Finding the Fourth Proportional to 8,861.69, 13,297.19 and 3,934.86

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Solution

The fourth proportional to 8,861.69, 13,297.19 and 3,934.86 is: 5,904.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,861.69 : 13,297.19 = 3,934.86 : x
  2. Step 2: Convert to fraction form
    8,861.69/13,297.19 = 3,934.86/x
  3. Step 3: Cross multiply
    8,861.69x = 13,297.19 × 3,934.86
  4. Step 4: Simplify right side
    8,861.69x = 52,322,561.37
  5. Step 5: Solve for x
    x = 52,322,561.37/8,861.69
  6. Step 6: Final answer
    x = 5,904.36

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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.