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Finding the Fourth Proportional to 8,156.60, 12,237.60 and 2,610.80

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Solution

The fourth proportional to 8,156.60, 12,237.60 and 2,610.80 is: 3,917.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,156.60 : 12,237.60 = 2,610.80 : x
  2. Step 2: Convert to fraction form
    8,156.60/12,237.60 = 2,610.80/x
  3. Step 3: Cross multiply
    8,156.60x = 12,237.60 × 2,610.80
  4. Step 4: Simplify right side
    8,156.60x = 31,949,926.08
  5. Step 5: Solve for x
    x = 31,949,926.08/8,156.60
  6. Step 6: Final answer
    x = 3,917.06

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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.