Home / 3,848.85-5,311.48-2,255.12

Finding the Fourth Proportional to 3,848.85, 5,311.48 and 2,255.12

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Solution

The fourth proportional to 3,848.85, 5,311.48 and 2,255.12 is: 3,112.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,848.85 : 5,311.48 = 2,255.12 : x
  2. Step 2: Convert to fraction form
    3,848.85/5,311.48 = 2,255.12/x
  3. Step 3: Cross multiply
    3,848.85x = 5,311.48 × 2,255.12
  4. Step 4: Simplify right side
    3,848.85x = 11,978,008.27
  5. Step 5: Solve for x
    x = 11,978,008.27/3,848.85
  6. Step 6: Final answer
    x = 3,112.10

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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.