Home / 2,082.40-3,123.60-1,936.60

Finding the Fourth Proportional to 2,082.40, 3,123.60 and 1,936.60

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Solution

The fourth proportional to 2,082.40, 3,123.60 and 1,936.60 is: 2,904.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,082.40 : 3,123.60 = 1,936.60 : x
  2. Step 2: Convert to fraction form
    2,082.40/3,123.60 = 1,936.60/x
  3. Step 3: Cross multiply
    2,082.40x = 3,123.60 × 1,936.60
  4. Step 4: Simplify right side
    2,082.40x = 6,049,163.76
  5. Step 5: Solve for x
    x = 6,049,163.76/2,082.40
  6. Step 6: Final answer
    x = 2,904.90

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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.