Home / 1,173.03-1,621.77-1,121.38

Finding the Fourth Proportional to 1,173.03, 1,621.77 and 1,121.38

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Solution

The fourth proportional to 1,173.03, 1,621.77 and 1,121.38 is: 1,550.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,173.03 : 1,621.77 = 1,121.38 : x
  2. Step 2: Convert to fraction form
    1,173.03/1,621.77 = 1,121.38/x
  3. Step 3: Cross multiply
    1,173.03x = 1,621.77 × 1,121.38
  4. Step 4: Simplify right side
    1,173.03x = 1,818,620.44
  5. Step 5: Solve for x
    x = 1,818,620.44/1,173.03
  6. Step 6: Final answer
    x = 1,550.36

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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.