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Finding the Fourth Proportional to 8,856.83, 12,165.93 and 8,813.09

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Solution

The fourth proportional to 8,856.83, 12,165.93 and 8,813.09 is: 12,105.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,856.83 : 12,165.93 = 8,813.09 : x
  2. Step 2: Convert to fraction form
    8,856.83/12,165.93 = 8,813.09/x
  3. Step 3: Cross multiply
    8,856.83x = 12,165.93 × 8,813.09
  4. Step 4: Simplify right side
    8,856.83x = 107,219,375.19
  5. Step 5: Solve for x
    x = 107,219,375.19/8,856.83
  6. Step 6: Final answer
    x = 12,105.85

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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.