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Finding the Fourth Proportional to 2,392.47, 3,300.01 and 1,991.97

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Solution

The fourth proportional to 2,392.47, 3,300.01 and 1,991.97 is: 2,747.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,392.47 : 3,300.01 = 1,991.97 : x
  2. Step 2: Convert to fraction form
    2,392.47/3,300.01 = 1,991.97/x
  3. Step 3: Cross multiply
    2,392.47x = 3,300.01 × 1,991.97
  4. Step 4: Simplify right side
    2,392.47x = 6,573,515.94
  5. Step 5: Solve for x
    x = 6,573,515.94/2,392.47
  6. Step 6: Final answer
    x = 2,747.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.