Home / 2,579.16-3,866.64-1,279.92

Finding the Fourth Proportional to 2,579.16, 3,866.64 and 1,279.92

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Solution

The fourth proportional to 2,579.16, 3,866.64 and 1,279.92 is: 1,918.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,579.16 : 3,866.64 = 1,279.92 : x
  2. Step 2: Convert to fraction form
    2,579.16/3,866.64 = 1,279.92/x
  3. Step 3: Cross multiply
    2,579.16x = 3,866.64 × 1,279.92
  4. Step 4: Simplify right side
    2,579.16x = 4,948,989.87
  5. Step 5: Solve for x
    x = 4,948,989.87/2,579.16
  6. Step 6: Final answer
    x = 1,918.84

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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.