Home / 3,175.70-4,379.14-2,729.20

Finding the Fourth Proportional to 3,175.70, 4,379.14 and 2,729.20

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Solution

The fourth proportional to 3,175.70, 4,379.14 and 2,729.20 is: 3,763.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,175.70 : 4,379.14 = 2,729.20 : x
  2. Step 2: Convert to fraction form
    3,175.70/4,379.14 = 2,729.20/x
  3. Step 3: Cross multiply
    3,175.70x = 4,379.14 × 2,729.20
  4. Step 4: Simplify right side
    3,175.70x = 11,951,548.89
  5. Step 5: Solve for x
    x = 11,951,548.89/3,175.70
  6. Step 6: Final answer
    x = 3,763.44

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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.