Home / 3,890.38-5,834.76-1,292.62

Finding the Fourth Proportional to 3,890.38, 5,834.76 and 1,292.62

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Solution

The fourth proportional to 3,890.38, 5,834.76 and 1,292.62 is: 1,938.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.38 : 5,834.76 = 1,292.62 : x
  2. Step 2: Convert to fraction form
    3,890.38/5,834.76 = 1,292.62/x
  3. Step 3: Cross multiply
    3,890.38x = 5,834.76 × 1,292.62
  4. Step 4: Simplify right side
    3,890.38x = 7,542,127.47
  5. Step 5: Solve for x
    x = 7,542,127.47/3,890.38
  6. Step 6: Final answer
    x = 1,938.66

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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.