Home / 3,993.09-5,989.88-1,219.95

Finding the Fourth Proportional to 3,993.09, 5,989.88 and 1,219.95

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Solution

The fourth proportional to 3,993.09, 5,989.88 and 1,219.95 is: 1,830.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,993.09 : 5,989.88 = 1,219.95 : x
  2. Step 2: Convert to fraction form
    3,993.09/5,989.88 = 1,219.95/x
  3. Step 3: Cross multiply
    3,993.09x = 5,989.88 × 1,219.95
  4. Step 4: Simplify right side
    3,993.09x = 7,307,354.11
  5. Step 5: Solve for x
    x = 7,307,354.11/3,993.09
  6. Step 6: Final answer
    x = 1,830.00

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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.