Home / 6,431.20-9,638.85-3,796.03

Finding the Fourth Proportional to 6,431.20, 9,638.85 and 3,796.03

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Solution

The fourth proportional to 6,431.20, 9,638.85 and 3,796.03 is: 5,689.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,431.20 : 9,638.85 = 3,796.03 : x
  2. Step 2: Convert to fraction form
    6,431.20/9,638.85 = 3,796.03/x
  3. Step 3: Cross multiply
    6,431.20x = 9,638.85 × 3,796.03
  4. Step 4: Simplify right side
    6,431.20x = 36,589,368.70
  5. Step 5: Solve for x
    x = 36,589,368.70/6,431.20
  6. Step 6: Final answer
    x = 5,689.36

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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.