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Finding the Fourth Proportional to 2,003.99, 3,006 and 543.11

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Solution

The fourth proportional to 2,003.99, 3,006 and 543.11 is: 814.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,003.99 : 3,006 = 543.11 : x
  2. Step 2: Convert to fraction form
    2,003.99/3,006 = 543.11/x
  3. Step 3: Cross multiply
    2,003.99x = 3,006 × 543.11
  4. Step 4: Simplify right side
    2,003.99x = 1,632,573.63
  5. Step 5: Solve for x
    x = 1,632,573.63/2,003.99
  6. Step 6: Final answer
    x = 814.66

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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.