Home / 5,115.88-7,672.08-1,995.64

Finding the Fourth Proportional to 5,115.88, 7,672.08 and 1,995.64

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Solution

The fourth proportional to 5,115.88, 7,672.08 and 1,995.64 is: 2,992.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.88 : 7,672.08 = 1,995.64 : x
  2. Step 2: Convert to fraction form
    5,115.88/7,672.08 = 1,995.64/x
  3. Step 3: Cross multiply
    5,115.88x = 7,672.08 × 1,995.64
  4. Step 4: Simplify right side
    5,115.88x = 15,310,709.73
  5. Step 5: Solve for x
    x = 15,310,709.73/5,115.88
  6. Step 6: Final answer
    x = 2,992.78

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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.