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Finding the Fourth Proportional to 1,963.92, 2,944.92 and 714.47

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Solution

The fourth proportional to 1,963.92, 2,944.92 and 714.47 is: 1,071.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,963.92 : 2,944.92 = 714.47 : x
  2. Step 2: Convert to fraction form
    1,963.92/2,944.92 = 714.47/x
  3. Step 3: Cross multiply
    1,963.92x = 2,944.92 × 714.47
  4. Step 4: Simplify right side
    1,963.92x = 2,104,064.35
  5. Step 5: Solve for x
    x = 2,104,064.35/1,963.92
  6. Step 6: Final answer
    x = 1,071.36

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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.