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Finding the Fourth Proportional to 8,159.01, 11,286.99 and 7,863.77

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Solution

The fourth proportional to 8,159.01, 11,286.99 and 7,863.77 is: 10,878.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,159.01 : 11,286.99 = 7,863.77 : x
  2. Step 2: Convert to fraction form
    8,159.01/11,286.99 = 7,863.77/x
  3. Step 3: Cross multiply
    8,159.01x = 11,286.99 × 7,863.77
  4. Step 4: Simplify right side
    8,159.01x = 88,758,236.92
  5. Step 5: Solve for x
    x = 88,758,236.92/8,159.01
  6. Step 6: Final answer
    x = 10,878.55

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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.