Home / 5,175.78-7,143.21-3,415.29

Finding the Fourth Proportional to 5,175.78, 7,143.21 and 3,415.29

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Solution

The fourth proportional to 5,175.78, 7,143.21 and 3,415.29 is: 4,713.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,175.78 : 7,143.21 = 3,415.29 : x
  2. Step 2: Convert to fraction form
    5,175.78/7,143.21 = 3,415.29/x
  3. Step 3: Cross multiply
    5,175.78x = 7,143.21 × 3,415.29
  4. Step 4: Simplify right side
    5,175.78x = 24,396,133.68
  5. Step 5: Solve for x
    x = 24,396,133.68/5,175.78
  6. Step 6: Final answer
    x = 4,713.52

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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.