Home / 3,847.87-5,309.68-2,356.21

Finding the Fourth Proportional to 3,847.87, 5,309.68 and 2,356.21

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Solution

The fourth proportional to 3,847.87, 5,309.68 and 2,356.21 is: 3,251.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,847.87 : 5,309.68 = 2,356.21 : x
  2. Step 2: Convert to fraction form
    3,847.87/5,309.68 = 2,356.21/x
  3. Step 3: Cross multiply
    3,847.87x = 5,309.68 × 2,356.21
  4. Step 4: Simplify right side
    3,847.87x = 12,510,709.33
  5. Step 5: Solve for x
    x = 12,510,709.33/3,847.87
  6. Step 6: Final answer
    x = 3,251.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.