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Finding the Fourth Proportional to 8,906.58, 12,292.53 and 8,512.86

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Solution

The fourth proportional to 8,906.58, 12,292.53 and 8,512.86 is: 11,749.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,906.58 : 12,292.53 = 8,512.86 : x
  2. Step 2: Convert to fraction form
    8,906.58/12,292.53 = 8,512.86/x
  3. Step 3: Cross multiply
    8,906.58x = 12,292.53 × 8,512.86
  4. Step 4: Simplify right side
    8,906.58x = 104,644,586.94
  5. Step 5: Solve for x
    x = 104,644,586.94/8,906.58
  6. Step 6: Final answer
    x = 11,749.13

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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.