Home / 8,169.36-12,256.20-4,272.72

Finding the Fourth Proportional to 8,169.36, 12,256.20 and 4,272.72

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Solution

The fourth proportional to 8,169.36, 12,256.20 and 4,272.72 is: 6,410.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,169.36 : 12,256.20 = 4,272.72 : x
  2. Step 2: Convert to fraction form
    8,169.36/12,256.20 = 4,272.72/x
  3. Step 3: Cross multiply
    8,169.36x = 12,256.20 × 4,272.72
  4. Step 4: Simplify right side
    8,169.36x = 52,367,310.86
  5. Step 5: Solve for x
    x = 52,367,310.86/8,169.36
  6. Step 6: Final answer
    x = 6,410.21

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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.