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Finding the Fourth Proportional to 2,027.84, 3,042.31 and 641.21

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Solution

The fourth proportional to 2,027.84, 3,042.31 and 641.21 is: 961.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,027.84 : 3,042.31 = 641.21 : x
  2. Step 2: Convert to fraction form
    2,027.84/3,042.31 = 641.21/x
  3. Step 3: Cross multiply
    2,027.84x = 3,042.31 × 641.21
  4. Step 4: Simplify right side
    2,027.84x = 1,950,741.28
  5. Step 5: Solve for x
    x = 1,950,741.28/2,027.84
  6. Step 6: Final answer
    x = 961.98

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1.5x scale

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.