Home / 3,847.81-5,309.66-2,169.63

Finding the Fourth Proportional to 3,847.81, 5,309.66 and 2,169.63

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Solution

The fourth proportional to 3,847.81, 5,309.66 and 2,169.63 is: 2,993.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,847.81 : 5,309.66 = 2,169.63 : x
  2. Step 2: Convert to fraction form
    3,847.81/5,309.66 = 2,169.63/x
  3. Step 3: Cross multiply
    3,847.81x = 5,309.66 × 2,169.63
  4. Step 4: Simplify right side
    3,847.81x = 11,519,986.78
  5. Step 5: Solve for x
    x = 11,519,986.78/3,847.81
  6. Step 6: Final answer
    x = 2,993.91

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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.