Home / 3,178.95-4,768.20-1,329.39

Finding the Fourth Proportional to 3,178.95, 4,768.20 and 1,329.39

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Solution

The fourth proportional to 3,178.95, 4,768.20 and 1,329.39 is: 1,993.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.95 : 4,768.20 = 1,329.39 : x
  2. Step 2: Convert to fraction form
    3,178.95/4,768.20 = 1,329.39/x
  3. Step 3: Cross multiply
    3,178.95x = 4,768.20 × 1,329.39
  4. Step 4: Simplify right side
    3,178.95x = 6,338,797.40
  5. Step 5: Solve for x
    x = 6,338,797.40/3,178.95
  6. Step 6: Final answer
    x = 1,993.99

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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.