Home / 1,728.36-2,385.19-982.27

Finding the Fourth Proportional to 1,728.36, 2,385.19 and 982.27

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Solution

The fourth proportional to 1,728.36, 2,385.19 and 982.27 is: 1,355.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,728.36 : 2,385.19 = 982.27 : x
  2. Step 2: Convert to fraction form
    1,728.36/2,385.19 = 982.27/x
  3. Step 3: Cross multiply
    1,728.36x = 2,385.19 × 982.27
  4. Step 4: Simplify right side
    1,728.36x = 2,342,883.74
  5. Step 5: Solve for x
    x = 2,342,883.74/1,728.36
  6. Step 6: Final answer
    x = 1,355.56

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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.