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Finding the Fourth Proportional to 8,606.91, 12,912.65 and 2,763.68

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Solution

The fourth proportional to 8,606.91, 12,912.65 and 2,763.68 is: 4,146.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,606.91 : 12,912.65 = 2,763.68 : x
  2. Step 2: Convert to fraction form
    8,606.91/12,912.65 = 2,763.68/x
  3. Step 3: Cross multiply
    8,606.91x = 12,912.65 × 2,763.68
  4. Step 4: Simplify right side
    8,606.91x = 35,686,354.17
  5. Step 5: Solve for x
    x = 35,686,354.17/8,606.91
  6. Step 6: Final answer
    x = 4,146.24

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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.