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Finding the Fourth Proportional to 1,963.72, 2,705.79 and 1,623.82

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Solution

The fourth proportional to 1,963.72, 2,705.79 and 1,623.82 is: 2,237.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,963.72 : 2,705.79 = 1,623.82 : x
  2. Step 2: Convert to fraction form
    1,963.72/2,705.79 = 1,623.82/x
  3. Step 3: Cross multiply
    1,963.72x = 2,705.79 × 1,623.82
  4. Step 4: Simplify right side
    1,963.72x = 4,393,715.92
  5. Step 5: Solve for x
    x = 4,393,715.92/1,963.72
  6. Step 6: Final answer
    x = 2,237.45

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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.