Home / 3,186.25-4,778.46-1,337.78

Finding the Fourth Proportional to 3,186.25, 4,778.46 and 1,337.78

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Solution

The fourth proportional to 3,186.25, 4,778.46 and 1,337.78 is: 2,006.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,186.25 : 4,778.46 = 1,337.78 : x
  2. Step 2: Convert to fraction form
    3,186.25/4,778.46 = 1,337.78/x
  3. Step 3: Cross multiply
    3,186.25x = 4,778.46 × 1,337.78
  4. Step 4: Simplify right side
    3,186.25x = 6,392,531.56
  5. Step 5: Solve for x
    x = 6,392,531.56/3,186.25
  6. Step 6: Final answer
    x = 2,006.29

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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.