Home / 2,579.58-3,866.94-1,279.80

Finding the Fourth Proportional to 2,579.58, 3,866.94 and 1,279.80

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Solution

The fourth proportional to 2,579.58, 3,866.94 and 1,279.80 is: 1,918.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,579.58 : 3,866.94 = 1,279.80 : x
  2. Step 2: Convert to fraction form
    2,579.58/3,866.94 = 1,279.80/x
  3. Step 3: Cross multiply
    2,579.58x = 3,866.94 × 1,279.80
  4. Step 4: Simplify right side
    2,579.58x = 4,948,909.81
  5. Step 5: Solve for x
    x = 4,948,909.81/2,579.58
  6. Step 6: Final answer
    x = 1,918.49

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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.