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Finding the Fourth Proportional to 1,898, 2,838.86 and 1,372.09

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Solution

The fourth proportional to 1,898, 2,838.86 and 1,372.09 is: 2,052.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,898 : 2,838.86 = 1,372.09 : x
  2. Step 2: Convert to fraction form
    1,898/2,838.86 = 1,372.09/x
  3. Step 3: Cross multiply
    1,898x = 2,838.86 × 1,372.09
  4. Step 4: Simplify right side
    1,898x = 3,895,150.36
  5. Step 5: Solve for x
    x = 3,895,150.36/1,898
  6. Step 6: Final answer
    x = 2,052.24

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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.