Home / 8,209.08-12,319.62-3,280.14

Finding the Fourth Proportional to 8,209.08, 12,319.62 and 3,280.14

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Solution

The fourth proportional to 8,209.08, 12,319.62 and 3,280.14 is: 4,922.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,209.08 : 12,319.62 = 3,280.14 : x
  2. Step 2: Convert to fraction form
    8,209.08/12,319.62 = 3,280.14/x
  3. Step 3: Cross multiply
    8,209.08x = 12,319.62 × 3,280.14
  4. Step 4: Simplify right side
    8,209.08x = 40,410,078.35
  5. Step 5: Solve for x
    x = 40,410,078.35/8,209.08
  6. Step 6: Final answer
    x = 4,922.61

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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.