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Finding the Fourth Proportional to 8,604.75, 11,878.88 and 8,086.35

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Solution

The fourth proportional to 8,604.75, 11,878.88 and 8,086.35 is: 11,163.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,604.75 : 11,878.88 = 8,086.35 : x
  2. Step 2: Convert to fraction form
    8,604.75/11,878.88 = 8,086.35/x
  3. Step 3: Cross multiply
    8,604.75x = 11,878.88 × 8,086.35
  4. Step 4: Simplify right side
    8,604.75x = 96,056,781.29
  5. Step 5: Solve for x
    x = 96,056,781.29/8,604.75
  6. Step 6: Final answer
    x = 11,163.23

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Half scale
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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.