Home / 1,728.14-2,383.97-1,138.46

Finding the Fourth Proportional to 1,728.14, 2,383.97 and 1,138.46

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Solution

The fourth proportional to 1,728.14, 2,383.97 and 1,138.46 is: 1,570.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,728.14 : 2,383.97 = 1,138.46 : x
  2. Step 2: Convert to fraction form
    1,728.14/2,383.97 = 1,138.46/x
  3. Step 3: Cross multiply
    1,728.14x = 2,383.97 × 1,138.46
  4. Step 4: Simplify right side
    1,728.14x = 2,714,036.87
  5. Step 5: Solve for x
    x = 2,714,036.87/1,728.14
  6. Step 6: Final answer
    x = 1,570.50

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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.