Home / 3,115.26-4,297.05-1,995.75

Finding the Fourth Proportional to 3,115.26, 4,297.05 and 1,995.75

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Solution

The fourth proportional to 3,115.26, 4,297.05 and 1,995.75 is: 2,752.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,115.26 : 4,297.05 = 1,995.75 : x
  2. Step 2: Convert to fraction form
    3,115.26/4,297.05 = 1,995.75/x
  3. Step 3: Cross multiply
    3,115.26x = 4,297.05 × 1,995.75
  4. Step 4: Simplify right side
    3,115.26x = 8,575,837.54
  5. Step 5: Solve for x
    x = 8,575,837.54/3,115.26
  6. Step 6: Final answer
    x = 2,752.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.