Home / 5,200.72-7,175.21-2,961.78

Finding the Fourth Proportional to 5,200.72, 7,175.21 and 2,961.78

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Solution

The fourth proportional to 5,200.72, 7,175.21 and 2,961.78 is: 4,086.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,200.72 : 7,175.21 = 2,961.78 : x
  2. Step 2: Convert to fraction form
    5,200.72/7,175.21 = 2,961.78/x
  3. Step 3: Cross multiply
    5,200.72x = 7,175.21 × 2,961.78
  4. Step 4: Simplify right side
    5,200.72x = 21,251,342.79
  5. Step 5: Solve for x
    x = 21,251,342.79/5,200.72
  6. Step 6: Final answer
    x = 4,086.23

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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.