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Finding the Fourth Proportional to 9,855.80, 13,601.06 and 5,379.66

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Solution

The fourth proportional to 9,855.80, 13,601.06 and 5,379.66 is: 7,423.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,855.80 : 13,601.06 = 5,379.66 : x
  2. Step 2: Convert to fraction form
    9,855.80/13,601.06 = 5,379.66/x
  3. Step 3: Cross multiply
    9,855.80x = 13,601.06 × 5,379.66
  4. Step 4: Simplify right side
    9,855.80x = 73,169,051.54
  5. Step 5: Solve for x
    x = 73,169,051.54/9,855.80
  6. Step 6: Final answer
    x = 7,423.96

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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.