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Finding the Fourth Proportional to 2,048.68, 3,072.70 and 749.84

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Solution

The fourth proportional to 2,048.68, 3,072.70 and 749.84 is: 1,124.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,048.68 : 3,072.70 = 749.84 : x
  2. Step 2: Convert to fraction form
    2,048.68/3,072.70 = 749.84/x
  3. Step 3: Cross multiply
    2,048.68x = 3,072.70 × 749.84
  4. Step 4: Simplify right side
    2,048.68x = 2,304,033.37
  5. Step 5: Solve for x
    x = 2,304,033.37/2,048.68
  6. Step 6: Final answer
    x = 1,124.64

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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.