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Finding the Fourth Proportional to 8,626, 12,939 and 2,470.48

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Solution

The fourth proportional to 8,626, 12,939 and 2,470.48 is: 3,705.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,626 : 12,939 = 2,470.48 : x
  2. Step 2: Convert to fraction form
    8,626/12,939 = 2,470.48/x
  3. Step 3: Cross multiply
    8,626x = 12,939 × 2,470.48
  4. Step 4: Simplify right side
    8,626x = 31,965,540.72
  5. Step 5: Solve for x
    x = 31,965,540.72/8,626
  6. Step 6: Final answer
    x = 3,705.72

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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.