Home / 3,825.77-5,278.66-2,231.47

Finding the Fourth Proportional to 3,825.77, 5,278.66 and 2,231.47

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Solution

The fourth proportional to 3,825.77, 5,278.66 and 2,231.47 is: 3,078.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,825.77 : 5,278.66 = 2,231.47 : x
  2. Step 2: Convert to fraction form
    3,825.77/5,278.66 = 2,231.47/x
  3. Step 3: Cross multiply
    3,825.77x = 5,278.66 × 2,231.47
  4. Step 4: Simplify right side
    3,825.77x = 11,779,171.43
  5. Step 5: Solve for x
    x = 11,779,171.43/3,825.77
  6. Step 6: Final answer
    x = 3,078.90

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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.