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Finding the Third Proportional to 1,905.19 and 4,174.88

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Solution

The third proportional to 1,905.19 and 4,174.88 is: 9,148.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.19 : 4,174.88 = 4,174.88 : x
  2. Step 2: Convert to fraction form
    1,905.19/4,174.88 = 4,174.88/x
  3. Step 3: Cross multiply
    1,905.19x = 4,174.88 × 4,174.88
  4. Step 4: Simplify right side
    1,905.19x = 17,429,581.27
  5. Step 5: Solve for x
    x = 17,429,581.27/1,905.19
  6. Step 6: Final answer
    x = 9,148.49

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.