Home / 3,910.29-5,395.35-2,231.06

Finding the Fourth Proportional to 3,910.29, 5,395.35 and 2,231.06

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Solution

The fourth proportional to 3,910.29, 5,395.35 and 2,231.06 is: 3,078.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.29 : 5,395.35 = 2,231.06 : x
  2. Step 2: Convert to fraction form
    3,910.29/5,395.35 = 2,231.06/x
  3. Step 3: Cross multiply
    3,910.29x = 5,395.35 × 2,231.06
  4. Step 4: Simplify right side
    3,910.29x = 12,037,349.57
  5. Step 5: Solve for x
    x = 12,037,349.57/3,910.29
  6. Step 6: Final answer
    x = 3,078.38

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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.