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Finding the Fourth Proportional to 8,374.40, 11,559.84 and 5,231.36

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Solution

The fourth proportional to 8,374.40, 11,559.84 and 5,231.36 is: 7,221.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,374.40 : 11,559.84 = 5,231.36 : x
  2. Step 2: Convert to fraction form
    8,374.40/11,559.84 = 5,231.36/x
  3. Step 3: Cross multiply
    8,374.40x = 11,559.84 × 5,231.36
  4. Step 4: Simplify right side
    8,374.40x = 60,473,684.58
  5. Step 5: Solve for x
    x = 60,473,684.58/8,374.40
  6. Step 6: Final answer
    x = 7,221.26

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.