Home / 2,122.28-3,179.16-1,012.77

Finding the Fourth Proportional to 2,122.28, 3,179.16 and 1,012.77

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Solution

The fourth proportional to 2,122.28, 3,179.16 and 1,012.77 is: 1,517.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.28 : 3,179.16 = 1,012.77 : x
  2. Step 2: Convert to fraction form
    2,122.28/3,179.16 = 1,012.77/x
  3. Step 3: Cross multiply
    2,122.28x = 3,179.16 × 1,012.77
  4. Step 4: Simplify right side
    2,122.28x = 3,219,757.87
  5. Step 5: Solve for x
    x = 3,219,757.87/2,122.28
  6. Step 6: Final answer
    x = 1,517.13

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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.