Home / 8,238.81-12,359.79-3,308.85

Finding the Fourth Proportional to 8,238.81, 12,359.79 and 3,308.85

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Solution

The fourth proportional to 8,238.81, 12,359.79 and 3,308.85 is: 4,963.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,238.81 : 12,359.79 = 3,308.85 : x
  2. Step 2: Convert to fraction form
    8,238.81/12,359.79 = 3,308.85/x
  3. Step 3: Cross multiply
    8,238.81x = 12,359.79 × 3,308.85
  4. Step 4: Simplify right side
    8,238.81x = 40,896,691.14
  5. Step 5: Solve for x
    x = 40,896,691.14/8,238.81
  6. Step 6: Final answer
    x = 4,963.91

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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.