Home / 3,910.21-5,396.60-2,231.23

Finding the Fourth Proportional to 3,910.21, 5,396.60 and 2,231.23

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Solution

The fourth proportional to 3,910.21, 5,396.60 and 2,231.23 is: 3,079.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,910.21 : 5,396.60 = 2,231.23 : x
  2. Step 2: Convert to fraction form
    3,910.21/5,396.60 = 2,231.23/x
  3. Step 3: Cross multiply
    3,910.21x = 5,396.60 × 2,231.23
  4. Step 4: Simplify right side
    3,910.21x = 12,041,055.82
  5. Step 5: Solve for x
    x = 12,041,055.82/3,910.21
  6. Step 6: Final answer
    x = 3,079.39

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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.