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Finding the Fourth Proportional to 8,861.10, 12,226.11 and 5,713.50

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Solution

The fourth proportional to 8,861.10, 12,226.11 and 5,713.50 is: 7,883.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,861.10 : 12,226.11 = 5,713.50 : x
  2. Step 2: Convert to fraction form
    8,861.10/12,226.11 = 5,713.50/x
  3. Step 3: Cross multiply
    8,861.10x = 12,226.11 × 5,713.50
  4. Step 4: Simplify right side
    8,861.10x = 69,853,879.49
  5. Step 5: Solve for x
    x = 69,853,879.49/8,861.10
  6. Step 6: Final answer
    x = 7,883.21

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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.