Home / 3,179.39-4,771.32-1,306.78

Finding the Fourth Proportional to 3,179.39, 4,771.32 and 1,306.78

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Solution

The fourth proportional to 3,179.39, 4,771.32 and 1,306.78 is: 1,961.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,179.39 : 4,771.32 = 1,306.78 : x
  2. Step 2: Convert to fraction form
    3,179.39/4,771.32 = 1,306.78/x
  3. Step 3: Cross multiply
    3,179.39x = 4,771.32 × 1,306.78
  4. Step 4: Simplify right side
    3,179.39x = 6,235,053.62
  5. Step 5: Solve for x
    x = 6,235,053.62/3,179.39
  6. Step 6: Final answer
    x = 1,961.08

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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.