Home / 3,125.21-4,678.70-2,791.71

Finding the Fourth Proportional to 3,125.21, 4,678.70 and 2,791.71

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Solution

The fourth proportional to 3,125.21, 4,678.70 and 2,791.71 is: 4,179.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.21 : 4,678.70 = 2,791.71 : x
  2. Step 2: Convert to fraction form
    3,125.21/4,678.70 = 2,791.71/x
  3. Step 3: Cross multiply
    3,125.21x = 4,678.70 × 2,791.71
  4. Step 4: Simplify right side
    3,125.21x = 13,061,559.62
  5. Step 5: Solve for x
    x = 13,061,559.62/3,125.21
  6. Step 6: Final answer
    x = 4,179.42

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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.