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Finding the Fourth Proportional to 8,906.51, 12,291.11 and 5,550.68

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Solution

The fourth proportional to 8,906.51, 12,291.11 and 5,550.68 is: 7,660.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,906.51 : 12,291.11 = 5,550.68 : x
  2. Step 2: Convert to fraction form
    8,906.51/12,291.11 = 5,550.68/x
  3. Step 3: Cross multiply
    8,906.51x = 12,291.11 × 5,550.68
  4. Step 4: Simplify right side
    8,906.51x = 68,224,042.24
  5. Step 5: Solve for x
    x = 68,224,042.24/8,906.51
  6. Step 6: Final answer
    x = 7,660.02

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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.