Home / 1,811.38-2,715.24-1,377.62

Finding the Fourth Proportional to 1,811.38, 2,715.24 and 1,377.62

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Solution

The fourth proportional to 1,811.38, 2,715.24 and 1,377.62 is: 2,065.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,811.38 : 2,715.24 = 1,377.62 : x
  2. Step 2: Convert to fraction form
    1,811.38/2,715.24 = 1,377.62/x
  3. Step 3: Cross multiply
    1,811.38x = 2,715.24 × 1,377.62
  4. Step 4: Simplify right side
    1,811.38x = 3,740,568.93
  5. Step 5: Solve for x
    x = 3,740,568.93/1,811.38
  6. Step 6: Final answer
    x = 2,065.04

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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.