Home / 8,160.29-12,239.76-3,228.61

Finding the Fourth Proportional to 8,160.29, 12,239.76 and 3,228.61

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Solution

The fourth proportional to 8,160.29, 12,239.76 and 3,228.61 is: 4,842.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,160.29 : 12,239.76 = 3,228.61 : x
  2. Step 2: Convert to fraction form
    8,160.29/12,239.76 = 3,228.61/x
  3. Step 3: Cross multiply
    8,160.29x = 12,239.76 × 3,228.61
  4. Step 4: Simplify right side
    8,160.29x = 39,517,397.83
  5. Step 5: Solve for x
    x = 39,517,397.83/8,160.29
  6. Step 6: Final answer
    x = 4,842.64

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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.