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Finding the Fourth Proportional to 8,609.90, 11,882.23 and 5,251.79

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Solution

The fourth proportional to 8,609.90, 11,882.23 and 5,251.79 is: 7,247.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,609.90 : 11,882.23 = 5,251.79 : x
  2. Step 2: Convert to fraction form
    8,609.90/11,882.23 = 5,251.79/x
  3. Step 3: Cross multiply
    8,609.90x = 11,882.23 × 5,251.79
  4. Step 4: Simplify right side
    8,609.90x = 62,402,993.27
  5. Step 5: Solve for x
    x = 62,402,993.27/8,609.90
  6. Step 6: Final answer
    x = 7,247.82

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1.5x scale

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.