Home / 6,814.21-9,403.31-3,981.85

Finding the Fourth Proportional to 6,814.21, 9,403.31 and 3,981.85

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Solution

The fourth proportional to 6,814.21, 9,403.31 and 3,981.85 is: 5,494.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,814.21 : 9,403.31 = 3,981.85 : x
  2. Step 2: Convert to fraction form
    6,814.21/9,403.31 = 3,981.85/x
  3. Step 3: Cross multiply
    6,814.21x = 9,403.31 × 3,981.85
  4. Step 4: Simplify right side
    6,814.21x = 37,442,569.92
  5. Step 5: Solve for x
    x = 37,442,569.92/6,814.21
  6. Step 6: Final answer
    x = 5,494.78

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1.5x scale

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.