Home / 3,941.78-5,912.76-1,308.44

Finding the Fourth Proportional to 3,941.78, 5,912.76 and 1,308.44

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Solution

The fourth proportional to 3,941.78, 5,912.76 and 1,308.44 is: 1,962.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,941.78 : 5,912.76 = 1,308.44 : x
  2. Step 2: Convert to fraction form
    3,941.78/5,912.76 = 1,308.44/x
  3. Step 3: Cross multiply
    3,941.78x = 5,912.76 × 1,308.44
  4. Step 4: Simplify right side
    3,941.78x = 7,736,491.69
  5. Step 5: Solve for x
    x = 7,736,491.69/3,941.78
  6. Step 6: Final answer
    x = 1,962.69

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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.