Home / 1,190.22-1,638.90-1,055.52

Finding the Fourth Proportional to 1,190.22, 1,638.90 and 1,055.52

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Solution

The fourth proportional to 1,190.22, 1,638.90 and 1,055.52 is: 1,453.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190.22 : 1,638.90 = 1,055.52 : x
  2. Step 2: Convert to fraction form
    1,190.22/1,638.90 = 1,055.52/x
  3. Step 3: Cross multiply
    1,190.22x = 1,638.90 × 1,055.52
  4. Step 4: Simplify right side
    1,190.22x = 1,729,891.73
  5. Step 5: Solve for x
    x = 1,729,891.73/1,190.22
  6. Step 6: Final answer
    x = 1,453.42

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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.