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Finding the Fourth Proportional to 8,855.91, 12,234.59 and 6,613.91

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Solution

The fourth proportional to 8,855.91, 12,234.59 and 6,613.91 is: 9,137.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,855.91 : 12,234.59 = 6,613.91 : x
  2. Step 2: Convert to fraction form
    8,855.91/12,234.59 = 6,613.91/x
  3. Step 3: Cross multiply
    8,855.91x = 12,234.59 × 6,613.91
  4. Step 4: Simplify right side
    8,855.91x = 80,918,382.90
  5. Step 5: Solve for x
    x = 80,918,382.90/8,855.91
  6. Step 6: Final answer
    x = 9,137.22

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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.