Home / 3,872.53-5,340.95-2,377.78

Finding the Fourth Proportional to 3,872.53, 5,340.95 and 2,377.78

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Solution

The fourth proportional to 3,872.53, 5,340.95 and 2,377.78 is: 3,279.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,872.53 : 5,340.95 = 2,377.78 : x
  2. Step 2: Convert to fraction form
    3,872.53/5,340.95 = 2,377.78/x
  3. Step 3: Cross multiply
    3,872.53x = 5,340.95 × 2,377.78
  4. Step 4: Simplify right side
    3,872.53x = 12,699,604.09
  5. Step 5: Solve for x
    x = 12,699,604.09/3,872.53
  6. Step 6: Final answer
    x = 3,279.41

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.