Home / 6,438.91-8,887.84-3,922.65

Finding the Fourth Proportional to 6,438.91, 8,887.84 and 3,922.65

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Solution

The fourth proportional to 6,438.91, 8,887.84 and 3,922.65 is: 5,414.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,438.91 : 8,887.84 = 3,922.65 : x
  2. Step 2: Convert to fraction form
    6,438.91/8,887.84 = 3,922.65/x
  3. Step 3: Cross multiply
    6,438.91x = 8,887.84 × 3,922.65
  4. Step 4: Simplify right side
    6,438.91x = 34,863,885.58
  5. Step 5: Solve for x
    x = 34,863,885.58/6,438.91
  6. Step 6: Final answer
    x = 5,414.56

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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.