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Finding the Fourth Proportional to 3,372, 4,653.39 and 1,974.78

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Solution

The fourth proportional to 3,372, 4,653.39 and 1,974.78 is: 2,725.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,372 : 4,653.39 = 1,974.78 : x
  2. Step 2: Convert to fraction form
    3,372/4,653.39 = 1,974.78/x
  3. Step 3: Cross multiply
    3,372x = 4,653.39 × 1,974.78
  4. Step 4: Simplify right side
    3,372x = 9,189,421.50
  5. Step 5: Solve for x
    x = 9,189,421.50/3,372
  6. Step 6: Final answer
    x = 2,725.21

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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.