Home / 3,873.26-5,344.40-2,279.78

Finding the Fourth Proportional to 3,873.26, 5,344.40 and 2,279.78

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Solution

The fourth proportional to 3,873.26, 5,344.40 and 2,279.78 is: 3,145.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,873.26 : 5,344.40 = 2,279.78 : x
  2. Step 2: Convert to fraction form
    3,873.26/5,344.40 = 2,279.78/x
  3. Step 3: Cross multiply
    3,873.26x = 5,344.40 × 2,279.78
  4. Step 4: Simplify right side
    3,873.26x = 12,184,056.23
  5. Step 5: Solve for x
    x = 12,184,056.23/3,873.26
  6. Step 6: Final answer
    x = 3,145.69

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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.