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Finding the Fourth Proportional to 2,048, 3,069.88 and 814.88

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Solution

The fourth proportional to 2,048, 3,069.88 and 814.88 is: 1,221.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,048 : 3,069.88 = 814.88 : x
  2. Step 2: Convert to fraction form
    2,048/3,069.88 = 814.88/x
  3. Step 3: Cross multiply
    2,048x = 3,069.88 × 814.88
  4. Step 4: Simplify right side
    2,048x = 2,501,583.81
  5. Step 5: Solve for x
    x = 2,501,583.81/2,048
  6. Step 6: Final answer
    x = 1,221.48

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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.