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Finding the Third Proportional to 1,123.03 and 2,290.78

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Solution

The third proportional to 1,123.03 and 2,290.78 is: 4,672.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123.03 : 2,290.78 = 2,290.78 : x
  2. Step 2: Convert to fraction form
    1,123.03/2,290.78 = 2,290.78/x
  3. Step 3: Cross multiply
    1,123.03x = 2,290.78 × 2,290.78
  4. Step 4: Simplify right side
    1,123.03x = 5,247,678.74
  5. Step 5: Solve for x
    x = 5,247,678.74/1,123.03
  6. Step 6: Final answer
    x = 4,672.78

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.