Home / 8,115.32-12,173.07-3,187.28

Finding the Fourth Proportional to 8,115.32, 12,173.07 and 3,187.28

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Solution

The fourth proportional to 8,115.32, 12,173.07 and 3,187.28 is: 4,780.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,115.32 : 12,173.07 = 3,187.28 : x
  2. Step 2: Convert to fraction form
    8,115.32/12,173.07 = 3,187.28/x
  3. Step 3: Cross multiply
    8,115.32x = 12,173.07 × 3,187.28
  4. Step 4: Simplify right side
    8,115.32x = 38,798,921.68
  5. Step 5: Solve for x
    x = 38,798,921.68/8,115.32
  6. Step 6: Final answer
    x = 4,780.95

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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.