Home / 2,121.94-3,179.40-1,502.58

Finding the Fourth Proportional to 2,121.94, 3,179.40 and 1,502.58

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Solution

The fourth proportional to 2,121.94, 3,179.40 and 1,502.58 is: 2,251.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.94 : 3,179.40 = 1,502.58 : x
  2. Step 2: Convert to fraction form
    2,121.94/3,179.40 = 1,502.58/x
  3. Step 3: Cross multiply
    2,121.94x = 3,179.40 × 1,502.58
  4. Step 4: Simplify right side
    2,121.94x = 4,777,302.85
  5. Step 5: Solve for x
    x = 4,777,302.85/2,121.94
  6. Step 6: Final answer
    x = 2,251.38

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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.