Home / 6,686.32-9,229.55-3,891.82

Finding the Fourth Proportional to 6,686.32, 9,229.55 and 3,891.82

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Solution

The fourth proportional to 6,686.32, 9,229.55 and 3,891.82 is: 5,372.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,686.32 : 9,229.55 = 3,891.82 : x
  2. Step 2: Convert to fraction form
    6,686.32/9,229.55 = 3,891.82/x
  3. Step 3: Cross multiply
    6,686.32x = 9,229.55 × 3,891.82
  4. Step 4: Simplify right side
    6,686.32x = 35,919,747.28
  5. Step 5: Solve for x
    x = 35,919,747.28/6,686.32
  6. Step 6: Final answer
    x = 5,372.13

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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.