Home / 3,450.66-5,175.05-985.43

Finding the Fourth Proportional to 3,450.66, 5,175.05 and 985.43

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Solution

The fourth proportional to 3,450.66, 5,175.05 and 985.43 is: 1,477.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,450.66 : 5,175.05 = 985.43 : x
  2. Step 2: Convert to fraction form
    3,450.66/5,175.05 = 985.43/x
  3. Step 3: Cross multiply
    3,450.66x = 5,175.05 × 985.43
  4. Step 4: Simplify right side
    3,450.66x = 5,099,618.72
  5. Step 5: Solve for x
    x = 5,099,618.72/3,450.66
  6. Step 6: Final answer
    x = 1,477.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.