Home / 1,199.11-1,786.91-1,159.96

Finding the Fourth Proportional to 1,199.11, 1,786.91 and 1,159.96

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Solution

The fourth proportional to 1,199.11, 1,786.91 and 1,159.96 is: 1,728.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,199.11 : 1,786.91 = 1,159.96 : x
  2. Step 2: Convert to fraction form
    1,199.11/1,786.91 = 1,159.96/x
  3. Step 3: Cross multiply
    1,199.11x = 1,786.91 × 1,159.96
  4. Step 4: Simplify right side
    1,199.11x = 2,072,738.32
  5. Step 5: Solve for x
    x = 2,072,738.32/1,199.11
  6. Step 6: Final answer
    x = 1,728.56

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.