Home / 1,989.41-2,745.39-1,203.30

Finding the Fourth Proportional to 1,989.41, 2,745.39 and 1,203.30

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Solution

The fourth proportional to 1,989.41, 2,745.39 and 1,203.30 is: 1,660.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989.41 : 2,745.39 = 1,203.30 : x
  2. Step 2: Convert to fraction form
    1,989.41/2,745.39 = 1,203.30/x
  3. Step 3: Cross multiply
    1,989.41x = 2,745.39 × 1,203.30
  4. Step 4: Simplify right side
    1,989.41x = 3,303,527.79
  5. Step 5: Solve for x
    x = 3,303,527.79/1,989.41
  6. Step 6: Final answer
    x = 1,660.56

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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.