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Finding the Third Proportional to 1,918.69 and 4,424.63

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Solution

The third proportional to 1,918.69 and 4,424.63 is: 10,203.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918.69 : 4,424.63 = 4,424.63 : x
  2. Step 2: Convert to fraction form
    1,918.69/4,424.63 = 4,424.63/x
  3. Step 3: Cross multiply
    1,918.69x = 4,424.63 × 4,424.63
  4. Step 4: Simplify right side
    1,918.69x = 19,577,306.39
  5. Step 5: Solve for x
    x = 19,577,306.39/1,918.69
  6. Step 6: Final answer
    x = 10,203.49

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Why These Related Problems?

These problems maintain the same ratio (2.31) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.