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Finding the Fourth Proportional to 8,169.86, 12,258.84 and 3,239.39

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Solution

The fourth proportional to 8,169.86, 12,258.84 and 3,239.39 is: 4,860.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,169.86 : 12,258.84 = 3,239.39 : x
  2. Step 2: Convert to fraction form
    8,169.86/12,258.84 = 3,239.39/x
  3. Step 3: Cross multiply
    8,169.86x = 12,258.84 × 3,239.39
  4. Step 4: Simplify right side
    8,169.86x = 39,711,206.50
  5. Step 5: Solve for x
    x = 39,711,206.50/8,169.86
  6. Step 6: Final answer
    x = 4,860.69

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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.