Home / 8,628.41-12,945.35-3,081.64

Finding the Fourth Proportional to 8,628.41, 12,945.35 and 3,081.64

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Solution

The fourth proportional to 8,628.41, 12,945.35 and 3,081.64 is: 4,623.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,628.41 : 12,945.35 = 3,081.64 : x
  2. Step 2: Convert to fraction form
    8,628.41/12,945.35 = 3,081.64/x
  3. Step 3: Cross multiply
    8,628.41x = 12,945.35 × 3,081.64
  4. Step 4: Simplify right side
    8,628.41x = 39,892,843.65
  5. Step 5: Solve for x
    x = 39,892,843.65/8,628.41
  6. Step 6: Final answer
    x = 4,623.43

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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.