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Finding the Fourth Proportional to 8,863.56, 12,231.60 and 5,137.56

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Solution

The fourth proportional to 8,863.56, 12,231.60 and 5,137.56 is: 7,089.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,863.56 : 12,231.60 = 5,137.56 : x
  2. Step 2: Convert to fraction form
    8,863.56/12,231.60 = 5,137.56/x
  3. Step 3: Cross multiply
    8,863.56x = 12,231.60 × 5,137.56
  4. Step 4: Simplify right side
    8,863.56x = 62,840,578.90
  5. Step 5: Solve for x
    x = 62,840,578.90/8,863.56
  6. Step 6: Final answer
    x = 7,089.77

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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.