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Finding the Fourth Proportional to 8,226.36, 12,339.54 and 3,609

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Solution

The fourth proportional to 8,226.36, 12,339.54 and 3,609 is: 5,413.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,226.36 : 12,339.54 = 3,609 : x
  2. Step 2: Convert to fraction form
    8,226.36/12,339.54 = 3,609/x
  3. Step 3: Cross multiply
    8,226.36x = 12,339.54 × 3,609
  4. Step 4: Simplify right side
    8,226.36x = 44,533,399.86
  5. Step 5: Solve for x
    x = 44,533,399.86/8,226.36
  6. Step 6: Final answer
    x = 5,413.50

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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.