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Finding the Fourth Proportional to 8,912.58, 13,368.33 and 2,672.61

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Solution

The fourth proportional to 8,912.58, 13,368.33 and 2,672.61 is: 4,008.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,912.58 : 13,368.33 = 2,672.61 : x
  2. Step 2: Convert to fraction form
    8,912.58/13,368.33 = 2,672.61/x
  3. Step 3: Cross multiply
    8,912.58x = 13,368.33 × 2,672.61
  4. Step 4: Simplify right side
    8,912.58x = 35,728,332.44
  5. Step 5: Solve for x
    x = 35,728,332.44/8,912.58
  6. Step 6: Final answer
    x = 4,008.75

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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.