Home / 3,431.15-4,735.31-2,105.72

Finding the Fourth Proportional to 3,431.15, 4,735.31 and 2,105.72

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Solution

The fourth proportional to 3,431.15, 4,735.31 and 2,105.72 is: 2,906.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,431.15 : 4,735.31 = 2,105.72 : x
  2. Step 2: Convert to fraction form
    3,431.15/4,735.31 = 2,105.72/x
  3. Step 3: Cross multiply
    3,431.15x = 4,735.31 × 2,105.72
  4. Step 4: Simplify right side
    3,431.15x = 9,971,213.30
  5. Step 5: Solve for x
    x = 9,971,213.30/3,431.15
  6. Step 6: Final answer
    x = 2,906.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.