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Finding the Fourth Proportional to 2,093.64, 2,889.10 and 1,209.38

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Solution

The fourth proportional to 2,093.64, 2,889.10 and 1,209.38 is: 1,668.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,093.64 : 2,889.10 = 1,209.38 : x
  2. Step 2: Convert to fraction form
    2,093.64/2,889.10 = 1,209.38/x
  3. Step 3: Cross multiply
    2,093.64x = 2,889.10 × 1,209.38
  4. Step 4: Simplify right side
    2,093.64x = 3,494,019.76
  5. Step 5: Solve for x
    x = 3,494,019.76/2,093.64
  6. Step 6: Final answer
    x = 1,668.87

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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.