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Finding the Fourth Proportional to 8,606.64, 12,910.68 and 2,762.04

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Solution

The fourth proportional to 8,606.64, 12,910.68 and 2,762.04 is: 4,143.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,606.64 : 12,910.68 = 2,762.04 : x
  2. Step 2: Convert to fraction form
    8,606.64/12,910.68 = 2,762.04/x
  3. Step 3: Cross multiply
    8,606.64x = 12,910.68 × 2,762.04
  4. Step 4: Simplify right side
    8,606.64x = 35,659,814.59
  5. Step 5: Solve for x
    x = 35,659,814.59/8,606.64
  6. Step 6: Final answer
    x = 4,143.29

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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.