Home / 3,877.29-5,815.94-1,280.43

Finding the Fourth Proportional to 3,877.29, 5,815.94 and 1,280.43

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Solution

The fourth proportional to 3,877.29, 5,815.94 and 1,280.43 is: 1,920.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,877.29 : 5,815.94 = 1,280.43 : x
  2. Step 2: Convert to fraction form
    3,877.29/5,815.94 = 1,280.43/x
  3. Step 3: Cross multiply
    3,877.29x = 5,815.94 × 1,280.43
  4. Step 4: Simplify right side
    3,877.29x = 7,446,897.65
  5. Step 5: Solve for x
    x = 7,446,897.65/3,877.29
  6. Step 6: Final answer
    x = 1,920.65

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Similar ratio
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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.