Home / 3,512.88-5,270.10-1,321.62

Finding the Fourth Proportional to 3,512.88, 5,270.10 and 1,321.62

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Solution

The fourth proportional to 3,512.88, 5,270.10 and 1,321.62 is: 1,982.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,512.88 : 5,270.10 = 1,321.62 : x
  2. Step 2: Convert to fraction form
    3,512.88/5,270.10 = 1,321.62/x
  3. Step 3: Cross multiply
    3,512.88x = 5,270.10 × 1,321.62
  4. Step 4: Simplify right side
    3,512.88x = 6,965,069.56
  5. Step 5: Solve for x
    x = 6,965,069.56/3,512.88
  6. Step 6: Final answer
    x = 1,982.72

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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.