Home / 2,179.92-3,008.68-1,393.94

Finding the Fourth Proportional to 2,179.92, 3,008.68 and 1,393.94

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Solution

The fourth proportional to 2,179.92, 3,008.68 and 1,393.94 is: 1,923.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.92 : 3,008.68 = 1,393.94 : x
  2. Step 2: Convert to fraction form
    2,179.92/3,008.68 = 1,393.94/x
  3. Step 3: Cross multiply
    2,179.92x = 3,008.68 × 1,393.94
  4. Step 4: Simplify right side
    2,179.92x = 4,193,919.40
  5. Step 5: Solve for x
    x = 4,193,919.40/2,179.92
  6. Step 6: Final answer
    x = 1,923.89

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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.