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Finding the Fourth Proportional to 9,855.99, 13,601.15 and 5,379.93

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Solution

The fourth proportional to 9,855.99, 13,601.15 and 5,379.93 is: 7,424.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,855.99 : 13,601.15 = 5,379.93 : x
  2. Step 2: Convert to fraction form
    9,855.99/13,601.15 = 5,379.93/x
  3. Step 3: Cross multiply
    9,855.99x = 13,601.15 × 5,379.93
  4. Step 4: Simplify right side
    9,855.99x = 73,173,234.92
  5. Step 5: Solve for x
    x = 73,173,234.92/9,855.99
  6. Step 6: Final answer
    x = 7,424.24

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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.