Home / 5,115.88-7,672.68-1,995.98

Finding the Fourth Proportional to 5,115.88, 7,672.68 and 1,995.98

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Solution

The fourth proportional to 5,115.88, 7,672.68 and 1,995.98 is: 2,993.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,115.88 : 7,672.68 = 1,995.98 : x
  2. Step 2: Convert to fraction form
    5,115.88/7,672.68 = 1,995.98/x
  3. Step 3: Cross multiply
    5,115.88x = 7,672.68 × 1,995.98
  4. Step 4: Simplify right side
    5,115.88x = 15,314,515.83
  5. Step 5: Solve for x
    x = 15,314,515.83/5,115.88
  6. Step 6: Final answer
    x = 2,993.53

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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.