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Finding the Third Proportional to 1,917.42 and 2,438.54

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Solution

The third proportional to 1,917.42 and 2,438.54 is: 3,101.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.42 : 2,438.54 = 2,438.54 : x
  2. Step 2: Convert to fraction form
    1,917.42/2,438.54 = 2,438.54/x
  3. Step 3: Cross multiply
    1,917.42x = 2,438.54 × 2,438.54
  4. Step 4: Simplify right side
    1,917.42x = 5,946,491.81
  5. Step 5: Solve for x
    x = 5,946,491.81/1,917.42
  6. Step 6: Final answer
    x = 3,101.30

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Why These Related Problems?

These problems maintain the same ratio (1.27) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.