Home / 5,105.68-7,660.46-2,638.96

Finding the Fourth Proportional to 5,105.68, 7,660.46 and 2,638.96

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Solution

The fourth proportional to 5,105.68, 7,660.46 and 2,638.96 is: 3,959.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,105.68 : 7,660.46 = 2,638.96 : x
  2. Step 2: Convert to fraction form
    5,105.68/7,660.46 = 2,638.96/x
  3. Step 3: Cross multiply
    5,105.68x = 7,660.46 × 2,638.96
  4. Step 4: Simplify right side
    5,105.68x = 20,215,647.52
  5. Step 5: Solve for x
    x = 20,215,647.52/5,105.68
  6. Step 6: Final answer
    x = 3,959.44

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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.