Home / 2,106.68-3,155.92-1,282.91

Finding the Fourth Proportional to 2,106.68, 3,155.92 and 1,282.91

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Solution

The fourth proportional to 2,106.68, 3,155.92 and 1,282.91 is: 1,921.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,106.68 : 3,155.92 = 1,282.91 : x
  2. Step 2: Convert to fraction form
    2,106.68/3,155.92 = 1,282.91/x
  3. Step 3: Cross multiply
    2,106.68x = 3,155.92 × 1,282.91
  4. Step 4: Simplify right side
    2,106.68x = 4,048,761.33
  5. Step 5: Solve for x
    x = 4,048,761.33/2,106.68
  6. Step 6: Final answer
    x = 1,921.87

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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.