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Finding the Fourth Proportional to 9,375.98, 12,867.40 and 8,489.84

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Solution

The fourth proportional to 9,375.98, 12,867.40 and 8,489.84 is: 11,651.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,375.98 : 12,867.40 = 8,489.84 : x
  2. Step 2: Convert to fraction form
    9,375.98/12,867.40 = 8,489.84/x
  3. Step 3: Cross multiply
    9,375.98x = 12,867.40 × 8,489.84
  4. Step 4: Simplify right side
    9,375.98x = 109,242,167.22
  5. Step 5: Solve for x
    x = 109,242,167.22/9,375.98
  6. Step 6: Final answer
    x = 11,651.28

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These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.