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Finding the Fourth Proportional to 8,906.64, 12,285.81 and 5,881.79

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Solution

The fourth proportional to 8,906.64, 12,285.81 and 5,881.79 is: 8,113.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,906.64 : 12,285.81 = 5,881.79 : x
  2. Step 2: Convert to fraction form
    8,906.64/12,285.81 = 5,881.79/x
  3. Step 3: Cross multiply
    8,906.64x = 12,285.81 × 5,881.79
  4. Step 4: Simplify right side
    8,906.64x = 72,262,492.97
  5. Step 5: Solve for x
    x = 72,262,492.97/8,906.64
  6. Step 6: Final answer
    x = 8,113.33

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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.