Home / 1,639.82-2,455.77-1,022.75

Finding the Fourth Proportional to 1,639.82, 2,455.77 and 1,022.75

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Solution

The fourth proportional to 1,639.82, 2,455.77 and 1,022.75 is: 1,531.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,639.82 : 2,455.77 = 1,022.75 : x
  2. Step 2: Convert to fraction form
    1,639.82/2,455.77 = 1,022.75/x
  3. Step 3: Cross multiply
    1,639.82x = 2,455.77 × 1,022.75
  4. Step 4: Simplify right side
    1,639.82x = 2,511,638.77
  5. Step 5: Solve for x
    x = 2,511,638.77/1,639.82
  6. Step 6: Final answer
    x = 1,531.66

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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.