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Finding the Fourth Proportional to 8,601.90, 11,869.86 and 5,245.74

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Solution

The fourth proportional to 8,601.90, 11,869.86 and 5,245.74 is: 7,238.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,601.90 : 11,869.86 = 5,245.74 : x
  2. Step 2: Convert to fraction form
    8,601.90/11,869.86 = 5,245.74/x
  3. Step 3: Cross multiply
    8,601.90x = 11,869.86 × 5,245.74
  4. Step 4: Simplify right side
    8,601.90x = 62,266,199.40
  5. Step 5: Solve for x
    x = 62,266,199.40/8,601.90
  6. Step 6: Final answer
    x = 7,238.66

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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.