Home / 3,431.21-5,147.67-1,583.62

Finding the Fourth Proportional to 3,431.21, 5,147.67 and 1,583.62

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Solution

The fourth proportional to 3,431.21, 5,147.67 and 1,583.62 is: 2,375.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.21 : 5,147.67 = 1,583.62 : x
  2. Step 2: Convert to fraction form
    3,431.21/5,147.67 = 1,583.62/x
  3. Step 3: Cross multiply
    3,431.21x = 5,147.67 × 1,583.62
  4. Step 4: Simplify right side
    3,431.21x = 8,151,927.43
  5. Step 5: Solve for x
    x = 8,151,927.43/3,431.21
  6. Step 6: Final answer
    x = 2,375.82

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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.