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Finding the Fourth Proportional to 8,855.15, 12,182.23 and 8,609.18

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Solution

The fourth proportional to 8,855.15, 12,182.23 and 8,609.18 is: 11,843.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,855.15 : 12,182.23 = 8,609.18 : x
  2. Step 2: Convert to fraction form
    8,855.15/12,182.23 = 8,609.18/x
  3. Step 3: Cross multiply
    8,855.15x = 12,182.23 × 8,609.18
  4. Step 4: Simplify right side
    8,855.15x = 104,879,010.87
  5. Step 5: Solve for x
    x = 104,879,010.87/8,855.15
  6. Step 6: Final answer
    x = 11,843.84

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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.