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Finding the Fourth Proportional to 8,606.19, 12,906.59 and 2,761.50

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Solution

The fourth proportional to 8,606.19, 12,906.59 and 2,761.50 is: 4,141.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,606.19 : 12,906.59 = 2,761.50 : x
  2. Step 2: Convert to fraction form
    8,606.19/12,906.59 = 2,761.50/x
  3. Step 3: Cross multiply
    8,606.19x = 12,906.59 × 2,761.50
  4. Step 4: Simplify right side
    8,606.19x = 35,641,534.48
  5. Step 5: Solve for x
    x = 35,641,534.48/8,606.19
  6. Step 6: Final answer
    x = 4,141.38

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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.