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Finding the Fourth Proportional to 8,794.11, 13,191.18 and 8,280.54

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Solution

The fourth proportional to 8,794.11, 13,191.18 and 8,280.54 is: 12,420.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,794.11 : 13,191.18 = 8,280.54 : x
  2. Step 2: Convert to fraction form
    8,794.11/13,191.18 = 8,280.54/x
  3. Step 3: Cross multiply
    8,794.11x = 13,191.18 × 8,280.54
  4. Step 4: Simplify right side
    8,794.11x = 109,230,093.64
  5. Step 5: Solve for x
    x = 109,230,093.64/8,794.11
  6. Step 6: Final answer
    x = 12,420.82

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.