Home / 3,984.50-5,977.07-1,211.42

Finding the Fourth Proportional to 3,984.50, 5,977.07 and 1,211.42

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Solution

The fourth proportional to 3,984.50, 5,977.07 and 1,211.42 is: 1,817.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,984.50 : 5,977.07 = 1,211.42 : x
  2. Step 2: Convert to fraction form
    3,984.50/5,977.07 = 1,211.42/x
  3. Step 3: Cross multiply
    3,984.50x = 5,977.07 × 1,211.42
  4. Step 4: Simplify right side
    3,984.50x = 7,240,742.14
  5. Step 5: Solve for x
    x = 7,240,742.14/3,984.50
  6. Step 6: Final answer
    x = 1,817.23

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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.