Home / 3,512.20-5,265.24-1,320.34

Finding the Fourth Proportional to 3,512.20, 5,265.24 and 1,320.34

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Solution

The fourth proportional to 3,512.20, 5,265.24 and 1,320.34 is: 1,979.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,512.20 : 5,265.24 = 1,320.34 : x
  2. Step 2: Convert to fraction form
    3,512.20/5,265.24 = 1,320.34/x
  3. Step 3: Cross multiply
    3,512.20x = 5,265.24 × 1,320.34
  4. Step 4: Simplify right side
    3,512.20x = 6,951,906.98
  5. Step 5: Solve for x
    x = 6,951,906.98/3,512.20
  6. Step 6: Final answer
    x = 1,979.36

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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.