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Finding the Fourth Proportional to 2,821.03, 3,892.99 and 1,625.57

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Solution

The fourth proportional to 2,821.03, 3,892.99 and 1,625.57 is: 2,243.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,821.03 : 3,892.99 = 1,625.57 : x
  2. Step 2: Convert to fraction form
    2,821.03/3,892.99 = 1,625.57/x
  3. Step 3: Cross multiply
    2,821.03x = 3,892.99 × 1,625.57
  4. Step 4: Simplify right side
    2,821.03x = 6,328,338.30
  5. Step 5: Solve for x
    x = 6,328,338.30/2,821.03
  6. Step 6: Final answer
    x = 2,243.28

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1.5x scale

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.