Home / 1,192.48-1,776.44-1,121.56

Finding the Fourth Proportional to 1,192.48, 1,776.44 and 1,121.56

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Solution

The fourth proportional to 1,192.48, 1,776.44 and 1,121.56 is: 1,670.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,192.48 : 1,776.44 = 1,121.56 : x
  2. Step 2: Convert to fraction form
    1,192.48/1,776.44 = 1,121.56/x
  3. Step 3: Cross multiply
    1,192.48x = 1,776.44 × 1,121.56
  4. Step 4: Simplify right side
    1,192.48x = 1,992,384.05
  5. Step 5: Solve for x
    x = 1,992,384.05/1,192.48
  6. Step 6: Final answer
    x = 1,670.79

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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.