Home / 5,380.47-8,069.13-2,092.78

Finding the Fourth Proportional to 5,380.47, 8,069.13 and 2,092.78

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Solution

The fourth proportional to 5,380.47, 8,069.13 and 2,092.78 is: 3,138.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,380.47 : 8,069.13 = 2,092.78 : x
  2. Step 2: Convert to fraction form
    5,380.47/8,069.13 = 2,092.78/x
  3. Step 3: Cross multiply
    5,380.47x = 8,069.13 × 2,092.78
  4. Step 4: Simplify right side
    5,380.47x = 16,886,913.88
  5. Step 5: Solve for x
    x = 16,886,913.88/5,380.47
  6. Step 6: Final answer
    x = 3,138.56

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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.