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Finding the Fourth Proportional to 3,941.87, 5,911.99 and 1,860.98

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Solution

The fourth proportional to 3,941.87, 5,911.99 and 1,860.98 is: 2,791.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,941.87 : 5,911.99 = 1,860.98 : x
  2. Step 2: Convert to fraction form
    3,941.87/5,911.99 = 1,860.98/x
  3. Step 3: Cross multiply
    3,941.87x = 5,911.99 × 1,860.98
  4. Step 4: Simplify right side
    3,941.87x = 11,002,060.94
  5. Step 5: Solve for x
    x = 11,002,060.94/3,941.87
  6. Step 6: Final answer
    x = 2,791.08

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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.