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Finding the Fourth Proportional to 1,906.50, 2,625.13 and 1,669.09

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Solution

The fourth proportional to 1,906.50, 2,625.13 and 1,669.09 is: 2,298.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,906.50 : 2,625.13 = 1,669.09 : x
  2. Step 2: Convert to fraction form
    1,906.50/2,625.13 = 1,669.09/x
  3. Step 3: Cross multiply
    1,906.50x = 2,625.13 × 1,669.09
  4. Step 4: Simplify right side
    1,906.50x = 4,381,569.29
  5. Step 5: Solve for x
    x = 4,381,569.29/1,906.50
  6. Step 6: Final answer
    x = 2,298.22

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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.