Home / 1,989.37-2,745.41-1,343.49

Finding the Fourth Proportional to 1,989.37, 2,745.41 and 1,343.49

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Solution

The fourth proportional to 1,989.37, 2,745.41 and 1,343.49 is: 1,854.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,989.37 : 2,745.41 = 1,343.49 : x
  2. Step 2: Convert to fraction form
    1,989.37/2,745.41 = 1,343.49/x
  3. Step 3: Cross multiply
    1,989.37x = 2,745.41 × 1,343.49
  4. Step 4: Simplify right side
    1,989.37x = 3,688,415.76
  5. Step 5: Solve for x
    x = 3,688,415.76/1,989.37
  6. Step 6: Final answer
    x = 1,854.06

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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.