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Finding the Fourth Proportional to 9,236.70, 12,743.91 and 5,257.80

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Solution

The fourth proportional to 9,236.70, 12,743.91 and 5,257.80 is: 7,254.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,236.70 : 12,743.91 = 5,257.80 : x
  2. Step 2: Convert to fraction form
    9,236.70/12,743.91 = 5,257.80/x
  3. Step 3: Cross multiply
    9,236.70x = 12,743.91 × 5,257.80
  4. Step 4: Simplify right side
    9,236.70x = 67,004,930.00
  5. Step 5: Solve for x
    x = 67,004,930.00/9,236.70
  6. Step 6: Final answer
    x = 7,254.21

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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.