Home / 2,079.92-2,869.62-1,381.44

Finding the Fourth Proportional to 2,079.92, 2,869.62 and 1,381.44

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Solution

The fourth proportional to 2,079.92, 2,869.62 and 1,381.44 is: 1,905.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.92 : 2,869.62 = 1,381.44 : x
  2. Step 2: Convert to fraction form
    2,079.92/2,869.62 = 1,381.44/x
  3. Step 3: Cross multiply
    2,079.92x = 2,869.62 × 1,381.44
  4. Step 4: Simplify right side
    2,079.92x = 3,964,207.85
  5. Step 5: Solve for x
    x = 3,964,207.85/2,079.92
  6. Step 6: Final answer
    x = 1,905.94

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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.