Home / 3,175.59-4,383.84-2,115.12

Finding the Fourth Proportional to 3,175.59, 4,383.84 and 2,115.12

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Solution

The fourth proportional to 3,175.59, 4,383.84 and 2,115.12 is: 2,919.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,175.59 : 4,383.84 = 2,115.12 : x
  2. Step 2: Convert to fraction form
    3,175.59/4,383.84 = 2,115.12/x
  3. Step 3: Cross multiply
    3,175.59x = 4,383.84 × 2,115.12
  4. Step 4: Simplify right side
    3,175.59x = 9,272,347.66
  5. Step 5: Solve for x
    x = 9,272,347.66/3,175.59
  6. Step 6: Final answer
    x = 2,919.88

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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.