Home / 3,156.30-4,729.22-1,919.97

Finding the Fourth Proportional to 3,156.30, 4,729.22 and 1,919.97

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Solution

The fourth proportional to 3,156.30, 4,729.22 and 1,919.97 is: 2,876.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.30 : 4,729.22 = 1,919.97 : x
  2. Step 2: Convert to fraction form
    3,156.30/4,729.22 = 1,919.97/x
  3. Step 3: Cross multiply
    3,156.30x = 4,729.22 × 1,919.97
  4. Step 4: Simplify right side
    3,156.30x = 9,079,960.52
  5. Step 5: Solve for x
    x = 9,079,960.52/3,156.30
  6. Step 6: Final answer
    x = 2,876.77

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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.