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Finding the Fourth Proportional to 8,651.54, 11,939.13 and 4,672.65

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Solution

The fourth proportional to 8,651.54, 11,939.13 and 4,672.65 is: 6,448.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,651.54 : 11,939.13 = 4,672.65 : x
  2. Step 2: Convert to fraction form
    8,651.54/11,939.13 = 4,672.65/x
  3. Step 3: Cross multiply
    8,651.54x = 11,939.13 × 4,672.65
  4. Step 4: Simplify right side
    8,651.54x = 55,787,375.79
  5. Step 5: Solve for x
    x = 55,787,375.79/8,651.54
  6. Step 6: Final answer
    x = 6,448.26

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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.