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Finding the Fourth Proportional to 2,900.82, 4,003.46 and 1,721.97

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Solution

The fourth proportional to 2,900.82, 4,003.46 and 1,721.97 is: 2,376.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,900.82 : 4,003.46 = 1,721.97 : x
  2. Step 2: Convert to fraction form
    2,900.82/4,003.46 = 1,721.97/x
  3. Step 3: Cross multiply
    2,900.82x = 4,003.46 × 1,721.97
  4. Step 4: Simplify right side
    2,900.82x = 6,893,835.86
  5. Step 5: Solve for x
    x = 6,893,835.86/2,900.82
  6. Step 6: Final answer
    x = 2,376.51

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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.