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Finding the Fourth Proportional to 2,093.65, 2,889.17 and 1,209.43

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Solution

The fourth proportional to 2,093.65, 2,889.17 and 1,209.43 is: 1,668.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,093.65 : 2,889.17 = 1,209.43 : x
  2. Step 2: Convert to fraction form
    2,093.65/2,889.17 = 1,209.43/x
  3. Step 3: Cross multiply
    2,093.65x = 2,889.17 × 1,209.43
  4. Step 4: Simplify right side
    2,093.65x = 3,494,250.97
  5. Step 5: Solve for x
    x = 3,494,250.97/2,093.65
  6. Step 6: Final answer
    x = 1,668.98

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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.