Home / 8,255.28-12,387.72-3,325.36

Finding the Fourth Proportional to 8,255.28, 12,387.72 and 3,325.36

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Solution

The fourth proportional to 8,255.28, 12,387.72 and 3,325.36 is: 4,989.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,255.28 : 12,387.72 = 3,325.36 : x
  2. Step 2: Convert to fraction form
    8,255.28/12,387.72 = 3,325.36/x
  3. Step 3: Cross multiply
    8,255.28x = 12,387.72 × 3,325.36
  4. Step 4: Simplify right side
    8,255.28x = 41,193,628.58
  5. Step 5: Solve for x
    x = 41,193,628.58/8,255.28
  6. Step 6: Final answer
    x = 4,989.97

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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.