Home / 3,815.40-5,719.86-2,082.36

Finding the Fourth Proportional to 3,815.40, 5,719.86 and 2,082.36

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Solution

The fourth proportional to 3,815.40, 5,719.86 and 2,082.36 is: 3,121.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,815.40 : 5,719.86 = 2,082.36 : x
  2. Step 2: Convert to fraction form
    3,815.40/5,719.86 = 2,082.36/x
  3. Step 3: Cross multiply
    3,815.40x = 5,719.86 × 2,082.36
  4. Step 4: Simplify right side
    3,815.40x = 11,910,807.67
  5. Step 5: Solve for x
    x = 11,910,807.67/3,815.40
  6. Step 6: Final answer
    x = 3,121.77

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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.