Home / 8,326.31-12,489.18-2,086.38

Finding the Fourth Proportional to 8,326.31, 12,489.18 and 2,086.38

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Solution

The fourth proportional to 8,326.31, 12,489.18 and 2,086.38 is: 3,129.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,326.31 : 12,489.18 = 2,086.38 : x
  2. Step 2: Convert to fraction form
    8,326.31/12,489.18 = 2,086.38/x
  3. Step 3: Cross multiply
    8,326.31x = 12,489.18 × 2,086.38
  4. Step 4: Simplify right side
    8,326.31x = 26,057,175.37
  5. Step 5: Solve for x
    x = 26,057,175.37/8,326.31
  6. Step 6: Final answer
    x = 3,129.50

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1.5x scale

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.