Home / 3,872.83-5,344.61-2,279.59

Finding the Fourth Proportional to 3,872.83, 5,344.61 and 2,279.59

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Solution

The fourth proportional to 3,872.83, 5,344.61 and 2,279.59 is: 3,145.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,872.83 : 5,344.61 = 2,279.59 : x
  2. Step 2: Convert to fraction form
    3,872.83/5,344.61 = 2,279.59/x
  3. Step 3: Cross multiply
    3,872.83x = 5,344.61 × 2,279.59
  4. Step 4: Simplify right side
    3,872.83x = 12,183,519.51
  5. Step 5: Solve for x
    x = 12,183,519.51/3,872.83
  6. Step 6: Final answer
    x = 3,145.90

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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.