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Finding the Fourth Proportional to 8,863.71, 13,190.92 and 8,568.42

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Solution

The fourth proportional to 8,863.71, 13,190.92 and 8,568.42 is: 12,751.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,863.71 : 13,190.92 = 8,568.42 : x
  2. Step 2: Convert to fraction form
    8,863.71/13,190.92 = 8,568.42/x
  3. Step 3: Cross multiply
    8,863.71x = 13,190.92 × 8,568.42
  4. Step 4: Simplify right side
    8,863.71x = 113,025,342.75
  5. Step 5: Solve for x
    x = 113,025,342.75/8,863.71
  6. Step 6: Final answer
    x = 12,751.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.