Home / 1,861.09-2,567.78-1,198.33

Finding the Fourth Proportional to 1,861.09, 2,567.78 and 1,198.33

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Solution

The fourth proportional to 1,861.09, 2,567.78 and 1,198.33 is: 1,653.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,861.09 : 2,567.78 = 1,198.33 : x
  2. Step 2: Convert to fraction form
    1,861.09/2,567.78 = 1,198.33/x
  3. Step 3: Cross multiply
    1,861.09x = 2,567.78 × 1,198.33
  4. Step 4: Simplify right side
    1,861.09x = 3,077,034.97
  5. Step 5: Solve for x
    x = 3,077,034.97/1,861.09
  6. Step 6: Final answer
    x = 1,653.35

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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.