Home / 3,171.88-4,372.62-2,175.58

Finding the Fourth Proportional to 3,171.88, 4,372.62 and 2,175.58

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Solution

The fourth proportional to 3,171.88, 4,372.62 and 2,175.58 is: 2,999.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,171.88 : 4,372.62 = 2,175.58 : x
  2. Step 2: Convert to fraction form
    3,171.88/4,372.62 = 2,175.58/x
  3. Step 3: Cross multiply
    3,171.88x = 4,372.62 × 2,175.58
  4. Step 4: Simplify right side
    3,171.88x = 9,512,984.62
  5. Step 5: Solve for x
    x = 9,512,984.62/3,171.88
  6. Step 6: Final answer
    x = 2,999.16

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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.