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Finding the Fourth Proportional to 8,155.78, 12,233.64 and 3,226.60

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Solution

The fourth proportional to 8,155.78, 12,233.64 and 3,226.60 is: 4,839.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,155.78 : 12,233.64 = 3,226.60 : x
  2. Step 2: Convert to fraction form
    8,155.78/12,233.64 = 3,226.60/x
  3. Step 3: Cross multiply
    8,155.78x = 12,233.64 × 3,226.60
  4. Step 4: Simplify right side
    8,155.78x = 39,473,062.82
  5. Step 5: Solve for x
    x = 39,473,062.82/8,155.78
  6. Step 6: Final answer
    x = 4,839.89

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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.