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Finding the Fourth Proportional to 3,137.96, 4,330.44 and 1,721.56

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Solution

The fourth proportional to 3,137.96, 4,330.44 and 1,721.56 is: 2,375.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,137.96 : 4,330.44 = 1,721.56 : x
  2. Step 2: Convert to fraction form
    3,137.96/4,330.44 = 1,721.56/x
  3. Step 3: Cross multiply
    3,137.96x = 4,330.44 × 1,721.56
  4. Step 4: Simplify right side
    3,137.96x = 7,455,101.46
  5. Step 5: Solve for x
    x = 7,455,101.46/3,137.96
  6. Step 6: Final answer
    x = 2,375.78

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