Home / 1,190.21-1,786.36-635.36

Finding the Fourth Proportional to 1,190.21, 1,786.36 and 635.36

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Solution

The fourth proportional to 1,190.21, 1,786.36 and 635.36 is: 953.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,190.21 : 1,786.36 = 635.36 : x
  2. Step 2: Convert to fraction form
    1,190.21/1,786.36 = 635.36/x
  3. Step 3: Cross multiply
    1,190.21x = 1,786.36 × 635.36
  4. Step 4: Simplify right side
    1,190.21x = 1,134,982.70
  5. Step 5: Solve for x
    x = 1,134,982.70/1,190.21
  6. Step 6: Final answer
    x = 953.60

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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.