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Finding the Fourth Proportional to 2,203, 3,040 and 1,318.82

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Solution

The fourth proportional to 2,203, 3,040 and 1,318.82 is: 1,819.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,203 : 3,040 = 1,318.82 : x
  2. Step 2: Convert to fraction form
    2,203/3,040 = 1,318.82/x
  3. Step 3: Cross multiply
    2,203x = 3,040 × 1,318.82
  4. Step 4: Simplify right side
    2,203x = 4,009,212.80
  5. Step 5: Solve for x
    x = 4,009,212.80/2,203
  6. Step 6: Final answer
    x = 1,819.89

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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.