Home / 8,318.09-12,479.88-3,934.98

Finding the Fourth Proportional to 8,318.09, 12,479.88 and 3,934.98

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Solution

The fourth proportional to 8,318.09, 12,479.88 and 3,934.98 is: 5,903.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,318.09 : 12,479.88 = 3,934.98 : x
  2. Step 2: Convert to fraction form
    8,318.09/12,479.88 = 3,934.98/x
  3. Step 3: Cross multiply
    8,318.09x = 12,479.88 × 3,934.98
  4. Step 4: Simplify right side
    8,318.09x = 49,108,092.96
  5. Step 5: Solve for x
    x = 49,108,092.96/8,318.09
  6. Step 6: Final answer
    x = 5,903.77

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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.