Home / 8,186.78-12,285.02-3,255.09

Finding the Fourth Proportional to 8,186.78, 12,285.02 and 3,255.09

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Solution

The fourth proportional to 8,186.78, 12,285.02 and 3,255.09 is: 4,884.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,186.78 : 12,285.02 = 3,255.09 : x
  2. Step 2: Convert to fraction form
    8,186.78/12,285.02 = 3,255.09/x
  3. Step 3: Cross multiply
    8,186.78x = 12,285.02 × 3,255.09
  4. Step 4: Simplify right side
    8,186.78x = 39,988,845.75
  5. Step 5: Solve for x
    x = 39,988,845.75/8,186.78
  6. Step 6: Final answer
    x = 4,884.56

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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.