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Finding the Fourth Proportional to 8,309.92, 12,467.41 and 4,981.86

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Solution

The fourth proportional to 8,309.92, 12,467.41 and 4,981.86 is: 7,474.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,309.92 : 12,467.41 = 4,981.86 : x
  2. Step 2: Convert to fraction form
    8,309.92/12,467.41 = 4,981.86/x
  3. Step 3: Cross multiply
    8,309.92x = 12,467.41 × 4,981.86
  4. Step 4: Simplify right side
    8,309.92x = 62,110,896.25
  5. Step 5: Solve for x
    x = 62,110,896.25/8,309.92
  6. Step 6: Final answer
    x = 7,474.31

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1.5x scale

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.