Home / 1,201.80-1,796.46-1,172.64

Finding the Fourth Proportional to 1,201.80, 1,796.46 and 1,172.64

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Solution

The fourth proportional to 1,201.80, 1,796.46 and 1,172.64 is: 1,752.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,201.80 : 1,796.46 = 1,172.64 : x
  2. Step 2: Convert to fraction form
    1,201.80/1,796.46 = 1,172.64/x
  3. Step 3: Cross multiply
    1,201.80x = 1,796.46 × 1,172.64
  4. Step 4: Simplify right side
    1,201.80x = 2,106,600.85
  5. Step 5: Solve for x
    x = 2,106,600.85/1,201.80
  6. Step 6: Final answer
    x = 1,752.87

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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.