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Finding the Fourth Proportional to 3,889.69, 5,835.07 and 1,808.63

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Solution

The fourth proportional to 3,889.69, 5,835.07 and 1,808.63 is: 2,713.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,889.69 : 5,835.07 = 1,808.63 : x
  2. Step 2: Convert to fraction form
    3,889.69/5,835.07 = 1,808.63/x
  3. Step 3: Cross multiply
    3,889.69x = 5,835.07 × 1,808.63
  4. Step 4: Simplify right side
    3,889.69x = 10,553,477.62
  5. Step 5: Solve for x
    x = 10,553,477.62/3,889.69
  6. Step 6: Final answer
    x = 2,713.19

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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.