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Finding the Fourth Proportional to 8,878.68, 12,163.61 and 8,546.31

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Solution

The fourth proportional to 8,878.68, 12,163.61 and 8,546.31 is: 11,708.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,878.68 : 12,163.61 = 8,546.31 : x
  2. Step 2: Convert to fraction form
    8,878.68/12,163.61 = 8,546.31/x
  3. Step 3: Cross multiply
    8,878.68x = 12,163.61 × 8,546.31
  4. Step 4: Simplify right side
    8,878.68x = 103,954,003.14
  5. Step 5: Solve for x
    x = 103,954,003.14/8,878.68
  6. Step 6: Final answer
    x = 11,708.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.