Home / 3,912.86-5,395.41-2,494.30

Finding the Fourth Proportional to 3,912.86, 5,395.41 and 2,494.30

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Solution

The fourth proportional to 3,912.86, 5,395.41 and 2,494.30 is: 3,439.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.86 : 5,395.41 = 2,494.30 : x
  2. Step 2: Convert to fraction form
    3,912.86/5,395.41 = 2,494.30/x
  3. Step 3: Cross multiply
    3,912.86x = 5,395.41 × 2,494.30
  4. Step 4: Simplify right side
    3,912.86x = 13,457,771.16
  5. Step 5: Solve for x
    x = 13,457,771.16/3,912.86
  6. Step 6: Final answer
    x = 3,439.37

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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.