Home / 3,748.05-5,171.45-2,175.21

Finding the Fourth Proportional to 3,748.05, 5,171.45 and 2,175.21

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Solution

The fourth proportional to 3,748.05, 5,171.45 and 2,175.21 is: 3,001.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,748.05 : 5,171.45 = 2,175.21 : x
  2. Step 2: Convert to fraction form
    3,748.05/5,171.45 = 2,175.21/x
  3. Step 3: Cross multiply
    3,748.05x = 5,171.45 × 2,175.21
  4. Step 4: Simplify right side
    3,748.05x = 11,248,978.88
  5. Step 5: Solve for x
    x = 11,248,978.88/3,748.05
  6. Step 6: Final answer
    x = 3,001.29

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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.