Home / 3,520.38-5,278.78-1,179.56

Finding the Fourth Proportional to 3,520.38, 5,278.78 and 1,179.56

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Solution

The fourth proportional to 3,520.38, 5,278.78 and 1,179.56 is: 1,768.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,520.38 : 5,278.78 = 1,179.56 : x
  2. Step 2: Convert to fraction form
    3,520.38/5,278.78 = 1,179.56/x
  3. Step 3: Cross multiply
    3,520.38x = 5,278.78 × 1,179.56
  4. Step 4: Simplify right side
    3,520.38x = 6,226,637.74
  5. Step 5: Solve for x
    x = 6,226,637.74/3,520.38
  6. Step 6: Final answer
    x = 1,768.74

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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.