Home / 4,028.78-6,042.36-1,431.20

Finding the Fourth Proportional to 4,028.78, 6,042.36 and 1,431.20

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Solution

The fourth proportional to 4,028.78, 6,042.36 and 1,431.20 is: 2,146.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,028.78 : 6,042.36 = 1,431.20 : x
  2. Step 2: Convert to fraction form
    4,028.78/6,042.36 = 1,431.20/x
  3. Step 3: Cross multiply
    4,028.78x = 6,042.36 × 1,431.20
  4. Step 4: Simplify right side
    4,028.78x = 8,647,825.63
  5. Step 5: Solve for x
    x = 8,647,825.63/4,028.78
  6. Step 6: Final answer
    x = 2,146.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.