Home / 3,946.05-5,920.00-1,172.75

Finding the Fourth Proportional to 3,946.05, 5,920.00 and 1,172.75

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Solution

The fourth proportional to 3,946.05, 5,920.00 and 1,172.75 is: 1,759.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,946.05 : 5,920.00 = 1,172.75 : x
  2. Step 2: Convert to fraction form
    3,946.05/5,920.00 = 1,172.75/x
  3. Step 3: Cross multiply
    3,946.05x = 5,920.00 × 1,172.75
  4. Step 4: Simplify right side
    3,946.05x = 6,942,651.87
  5. Step 5: Solve for x
    x = 6,942,651.87/3,946.05
  6. Step 6: Final answer
    x = 1,759.39

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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.