Home / 3,808.67-5,255.83-2,215.44

Finding the Fourth Proportional to 3,808.67, 5,255.83 and 2,215.44

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Solution

The fourth proportional to 3,808.67, 5,255.83 and 2,215.44 is: 3,057.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,808.67 : 5,255.83 = 2,215.44 : x
  2. Step 2: Convert to fraction form
    3,808.67/5,255.83 = 2,215.44/x
  3. Step 3: Cross multiply
    3,808.67x = 5,255.83 × 2,215.44
  4. Step 4: Simplify right side
    3,808.67x = 11,643,976.02
  5. Step 5: Solve for x
    x = 11,643,976.02/3,808.67
  6. Step 6: Final answer
    x = 3,057.23

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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.