Home / 3,123.70-4,687.17-2,028.58

Finding the Fourth Proportional to 3,123.70, 4,687.17 and 2,028.58

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Solution

The fourth proportional to 3,123.70, 4,687.17 and 2,028.58 is: 3,043.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.70 : 4,687.17 = 2,028.58 : x
  2. Step 2: Convert to fraction form
    3,123.70/4,687.17 = 2,028.58/x
  3. Step 3: Cross multiply
    3,123.70x = 4,687.17 × 2,028.58
  4. Step 4: Simplify right side
    3,123.70x = 9,508,299.32
  5. Step 5: Solve for x
    x = 9,508,299.32/3,123.70
  6. Step 6: Final answer
    x = 3,043.92

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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.