Home / 3,145.28-4,717.92-1,411.88

Finding the Fourth Proportional to 3,145.28, 4,717.92 and 1,411.88

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Solution

The fourth proportional to 3,145.28, 4,717.92 and 1,411.88 is: 2,117.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,145.28 : 4,717.92 = 1,411.88 : x
  2. Step 2: Convert to fraction form
    3,145.28/4,717.92 = 1,411.88/x
  3. Step 3: Cross multiply
    3,145.28x = 4,717.92 × 1,411.88
  4. Step 4: Simplify right side
    3,145.28x = 6,661,121.57
  5. Step 5: Solve for x
    x = 6,661,121.57/3,145.28
  6. Step 6: Final answer
    x = 2,117.82

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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.