Home / 4,279.44-6,387.68-3,966.80

Finding the Fourth Proportional to 4,279.44, 6,387.68 and 3,966.80

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Solution

The fourth proportional to 4,279.44, 6,387.68 and 3,966.80 is: 5,921.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,279.44 : 6,387.68 = 3,966.80 : x
  2. Step 2: Convert to fraction form
    4,279.44/6,387.68 = 3,966.80/x
  3. Step 3: Cross multiply
    4,279.44x = 6,387.68 × 3,966.80
  4. Step 4: Simplify right side
    4,279.44x = 25,338,649.02
  5. Step 5: Solve for x
    x = 25,338,649.02/4,279.44
  6. Step 6: Final answer
    x = 5,921.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.