Home / 8,431.44-12,647.20-3,433.90

Finding the Fourth Proportional to 8,431.44, 12,647.20 and 3,433.90

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Solution

The fourth proportional to 8,431.44, 12,647.20 and 3,433.90 is: 5,150.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,431.44 : 12,647.20 = 3,433.90 : x
  2. Step 2: Convert to fraction form
    8,431.44/12,647.20 = 3,433.90/x
  3. Step 3: Cross multiply
    8,431.44x = 12,647.20 × 3,433.90
  4. Step 4: Simplify right side
    8,431.44x = 43,429,220.08
  5. Step 5: Solve for x
    x = 43,429,220.08/8,431.44
  6. Step 6: Final answer
    x = 5,150.87

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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.