Home / 1,993.23-2,989.91-1,408.95

Finding the Fourth Proportional to 1,993.23, 2,989.91 and 1,408.95

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Solution

The fourth proportional to 1,993.23, 2,989.91 and 1,408.95 is: 2,113.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,993.23 : 2,989.91 = 1,408.95 : x
  2. Step 2: Convert to fraction form
    1,993.23/2,989.91 = 1,408.95/x
  3. Step 3: Cross multiply
    1,993.23x = 2,989.91 × 1,408.95
  4. Step 4: Simplify right side
    1,993.23x = 4,212,633.69
  5. Step 5: Solve for x
    x = 4,212,633.69/1,993.23
  6. Step 6: Final answer
    x = 2,113.47

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.