Home / 3,431.18-5,149.66-3,215.18

Finding the Fourth Proportional to 3,431.18, 5,149.66 and 3,215.18

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Solution

The fourth proportional to 3,431.18, 5,149.66 and 3,215.18 is: 4,825.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.18 : 5,149.66 = 3,215.18 : x
  2. Step 2: Convert to fraction form
    3,431.18/5,149.66 = 3,215.18/x
  3. Step 3: Cross multiply
    3,431.18x = 5,149.66 × 3,215.18
  4. Step 4: Simplify right side
    3,431.18x = 16,557,083.84
  5. Step 5: Solve for x
    x = 16,557,083.84/3,431.18
  6. Step 6: Final answer
    x = 4,825.48

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Similar ratio
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1.5x scale

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.