Home / 1,699.11-2,563.97-1,638.09

Finding the Fourth Proportional to 1,699.11, 2,563.97 and 1,638.09

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Solution

The fourth proportional to 1,699.11, 2,563.97 and 1,638.09 is: 2,471.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,699.11 : 2,563.97 = 1,638.09 : x
  2. Step 2: Convert to fraction form
    1,699.11/2,563.97 = 1,638.09/x
  3. Step 3: Cross multiply
    1,699.11x = 2,563.97 × 1,638.09
  4. Step 4: Simplify right side
    1,699.11x = 4,200,005.43
  5. Step 5: Solve for x
    x = 4,200,005.43/1,699.11
  6. Step 6: Final answer
    x = 2,471.89

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.