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Finding the Fourth Proportional to 2,217.62, 3,060.49 and 1,223

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Solution

The fourth proportional to 2,217.62, 3,060.49 and 1,223 is: 1,687.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,217.62 : 3,060.49 = 1,223 : x
  2. Step 2: Convert to fraction form
    2,217.62/3,060.49 = 1,223/x
  3. Step 3: Cross multiply
    2,217.62x = 3,060.49 × 1,223
  4. Step 4: Simplify right side
    2,217.62x = 3,742,979.27
  5. Step 5: Solve for x
    x = 3,742,979.27/2,217.62
  6. Step 6: Final answer
    x = 1,687.84

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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.