Home / 3,941.55-5,906.85-1,991.47

Finding the Fourth Proportional to 3,941.55, 5,906.85 and 1,991.47

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Solution

The fourth proportional to 3,941.55, 5,906.85 and 1,991.47 is: 2,984.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,941.55 : 5,906.85 = 1,991.47 : x
  2. Step 2: Convert to fraction form
    3,941.55/5,906.85 = 1,991.47/x
  3. Step 3: Cross multiply
    3,941.55x = 5,906.85 × 1,991.47
  4. Step 4: Simplify right side
    3,941.55x = 11,763,314.57
  5. Step 5: Solve for x
    x = 11,763,314.57/3,941.55
  6. Step 6: Final answer
    x = 2,984.44

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1.5x scale

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.