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Finding the Third Proportional to 1,121.34 and 2,417.34

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Solution

The third proportional to 1,121.34 and 2,417.34 is: 5,211.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121.34 : 2,417.34 = 2,417.34 : x
  2. Step 2: Convert to fraction form
    1,121.34/2,417.34 = 2,417.34/x
  3. Step 3: Cross multiply
    1,121.34x = 2,417.34 × 2,417.34
  4. Step 4: Simplify right side
    1,121.34x = 5,843,550.81
  5. Step 5: Solve for x
    x = 5,843,550.81/1,121.34
  6. Step 6: Final answer
    x = 5,211.20

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.