Home / 8,428.74-12,644.39-2,727.81

Finding the Fourth Proportional to 8,428.74, 12,644.39 and 2,727.81

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Solution

The fourth proportional to 8,428.74, 12,644.39 and 2,727.81 is: 4,092.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,428.74 : 12,644.39 = 2,727.81 : x
  2. Step 2: Convert to fraction form
    8,428.74/12,644.39 = 2,727.81/x
  3. Step 3: Cross multiply
    8,428.74x = 12,644.39 × 2,727.81
  4. Step 4: Simplify right side
    8,428.74x = 34,491,479.85
  5. Step 5: Solve for x
    x = 34,491,479.85/8,428.74
  6. Step 6: Final answer
    x = 4,092.13

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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.