Home / 2,665.20-3,997.30-2,148.22

Finding the Fourth Proportional to 2,665.20, 3,997.30 and 2,148.22

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Solution

The fourth proportional to 2,665.20, 3,997.30 and 2,148.22 is: 3,221.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,665.20 : 3,997.30 = 2,148.22 : x
  2. Step 2: Convert to fraction form
    2,665.20/3,997.30 = 2,148.22/x
  3. Step 3: Cross multiply
    2,665.20x = 3,997.30 × 2,148.22
  4. Step 4: Simplify right side
    2,665.20x = 8,587,083.46
  5. Step 5: Solve for x
    x = 8,587,083.46/2,665.20
  6. Step 6: Final answer
    x = 3,221.92

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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.