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Finding the Fourth Proportional to 9,379.63, 14,069.91 and 2,805.87

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Solution

The fourth proportional to 9,379.63, 14,069.91 and 2,805.87 is: 4,208.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,379.63 : 14,069.91 = 2,805.87 : x
  2. Step 2: Convert to fraction form
    9,379.63/14,069.91 = 2,805.87/x
  3. Step 3: Cross multiply
    9,379.63x = 14,069.91 × 2,805.87
  4. Step 4: Simplify right side
    9,379.63x = 39,478,338.37
  5. Step 5: Solve for x
    x = 39,478,338.37/9,379.63
  6. Step 6: Final answer
    x = 4,208.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.