Home / 2,687.05-4,028.55-1,711.27

Finding the Fourth Proportional to 2,687.05, 4,028.55 and 1,711.27

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Solution

The fourth proportional to 2,687.05, 4,028.55 and 1,711.27 is: 2,565.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,687.05 : 4,028.55 = 1,711.27 : x
  2. Step 2: Convert to fraction form
    2,687.05/4,028.55 = 1,711.27/x
  3. Step 3: Cross multiply
    2,687.05x = 4,028.55 × 1,711.27
  4. Step 4: Simplify right side
    2,687.05x = 6,893,936.76
  5. Step 5: Solve for x
    x = 6,893,936.76/2,687.05
  6. Step 6: Final answer
    x = 2,565.62

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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.