Home / 3,424.30-5,135.10-1,231.90

Finding the Fourth Proportional to 3,424.30, 5,135.10 and 1,231.90

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Solution

The fourth proportional to 3,424.30, 5,135.10 and 1,231.90 is: 1,847.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,424.30 : 5,135.10 = 1,231.90 : x
  2. Step 2: Convert to fraction form
    3,424.30/5,135.10 = 1,231.90/x
  3. Step 3: Cross multiply
    3,424.30x = 5,135.10 × 1,231.90
  4. Step 4: Simplify right side
    3,424.30x = 6,325,929.69
  5. Step 5: Solve for x
    x = 6,325,929.69/3,424.30
  6. Step 6: Final answer
    x = 1,847.36

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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.