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Finding the Fourth Proportional to 2,091.62, 3,137.08 and 630.43

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Solution

The fourth proportional to 2,091.62, 3,137.08 and 630.43 is: 945.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,091.62 : 3,137.08 = 630.43 : x
  2. Step 2: Convert to fraction form
    2,091.62/3,137.08 = 630.43/x
  3. Step 3: Cross multiply
    2,091.62x = 3,137.08 × 630.43
  4. Step 4: Simplify right side
    2,091.62x = 1,977,709.34
  5. Step 5: Solve for x
    x = 1,977,709.34/2,091.62
  6. Step 6: Final answer
    x = 945.54

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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.