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Finding the Fourth Proportional to 9,855.92, 13,601.31 and 5,379.67

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Solution

The fourth proportional to 9,855.92, 13,601.31 and 5,379.67 is: 7,424.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,855.92 : 13,601.31 = 5,379.67 : x
  2. Step 2: Convert to fraction form
    9,855.92/13,601.31 = 5,379.67/x
  3. Step 3: Cross multiply
    9,855.92x = 13,601.31 × 5,379.67
  4. Step 4: Simplify right side
    9,855.92x = 73,170,519.23
  5. Step 5: Solve for x
    x = 73,170,519.23/9,855.92
  6. Step 6: Final answer
    x = 7,424.02

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1.5x scale

Why These Related Problems?

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