Home / 8,668.60-11,961.66-5,131.96

Finding the Fourth Proportional to 8,668.60, 11,961.66 and 5,131.96

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Solution

The fourth proportional to 8,668.60, 11,961.66 and 5,131.96 is: 7,081.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,668.60 : 11,961.66 = 5,131.96 : x
  2. Step 2: Convert to fraction form
    8,668.60/11,961.66 = 5,131.96/x
  3. Step 3: Cross multiply
    8,668.60x = 11,961.66 × 5,131.96
  4. Step 4: Simplify right side
    8,668.60x = 61,386,760.65
  5. Step 5: Solve for x
    x = 61,386,760.65/8,668.60
  6. Step 6: Final answer
    x = 7,081.51

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.