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Finding the Fourth Proportional to 8,796.40, 12,112.07 and 8,091.09

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Solution

The fourth proportional to 8,796.40, 12,112.07 and 8,091.09 is: 11,140.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,796.40 : 12,112.07 = 8,091.09 : x
  2. Step 2: Convert to fraction form
    8,796.40/12,112.07 = 8,091.09/x
  3. Step 3: Cross multiply
    8,796.40x = 12,112.07 × 8,091.09
  4. Step 4: Simplify right side
    8,796.40x = 97,999,808.00
  5. Step 5: Solve for x
    x = 97,999,808.00/8,796.40
  6. Step 6: Final answer
    x = 11,140.90

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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.