Home / 3,912.15-5,397.43-2,232.35

Finding the Fourth Proportional to 3,912.15, 5,397.43 and 2,232.35

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Solution

The fourth proportional to 3,912.15, 5,397.43 and 2,232.35 is: 3,079.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,912.15 : 5,397.43 = 2,232.35 : x
  2. Step 2: Convert to fraction form
    3,912.15/5,397.43 = 2,232.35/x
  3. Step 3: Cross multiply
    3,912.15x = 5,397.43 × 2,232.35
  4. Step 4: Simplify right side
    3,912.15x = 12,048,952.86
  5. Step 5: Solve for x
    x = 12,048,952.86/3,912.15
  6. Step 6: Final answer
    x = 3,079.88

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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.