Home / 3,145.28-4,339.68-1,964.96

Finding the Fourth Proportional to 3,145.28, 4,339.68 and 1,964.96

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Solution

The fourth proportional to 3,145.28, 4,339.68 and 1,964.96 is: 2,711.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.28 : 4,339.68 = 1,964.96 : x
  2. Step 2: Convert to fraction form
    3,145.28/4,339.68 = 1,964.96/x
  3. Step 3: Cross multiply
    3,145.28x = 4,339.68 × 1,964.96
  4. Step 4: Simplify right side
    3,145.28x = 8,527,297.61
  5. Step 5: Solve for x
    x = 8,527,297.61/3,145.28
  6. Step 6: Final answer
    x = 2,711.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.