Home / 6,811.85-9,398.68-3,977.61

Finding the Fourth Proportional to 6,811.85, 9,398.68 and 3,977.61

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Solution

The fourth proportional to 6,811.85, 9,398.68 and 3,977.61 is: 5,488.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,811.85 : 9,398.68 = 3,977.61 : x
  2. Step 2: Convert to fraction form
    6,811.85/9,398.68 = 3,977.61/x
  3. Step 3: Cross multiply
    6,811.85x = 9,398.68 × 3,977.61
  4. Step 4: Simplify right side
    6,811.85x = 37,384,273.61
  5. Step 5: Solve for x
    x = 37,384,273.61/6,811.85
  6. Step 6: Final answer
    x = 5,488.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.