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Finding the Fourth Proportional to 1,646.64, 2,469.48 and 1,072.56

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Solution

The fourth proportional to 1,646.64, 2,469.48 and 1,072.56 is: 1,608.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,646.64 : 2,469.48 = 1,072.56 : x
  2. Step 2: Convert to fraction form
    1,646.64/2,469.48 = 1,072.56/x
  3. Step 3: Cross multiply
    1,646.64x = 2,469.48 × 1,072.56
  4. Step 4: Simplify right side
    1,646.64x = 2,648,665.47
  5. Step 5: Solve for x
    x = 2,648,665.47/1,646.64
  6. Step 6: Final answer
    x = 1,608.53

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.