Home / 5,175.39-7,142.54-3,187.11

Finding the Fourth Proportional to 5,175.39, 7,142.54 and 3,187.11

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Solution

The fourth proportional to 5,175.39, 7,142.54 and 3,187.11 is: 4,398.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,175.39 : 7,142.54 = 3,187.11 : x
  2. Step 2: Convert to fraction form
    5,175.39/7,142.54 = 3,187.11/x
  3. Step 3: Cross multiply
    5,175.39x = 7,142.54 × 3,187.11
  4. Step 4: Simplify right side
    5,175.39x = 22,764,044.72
  5. Step 5: Solve for x
    x = 22,764,044.72/5,175.39
  6. Step 6: Final answer
    x = 4,398.52

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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.