Home / 3,425.78-5,140.13-1,085.97

Finding the Fourth Proportional to 3,425.78, 5,140.13 and 1,085.97

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Solution

The fourth proportional to 3,425.78, 5,140.13 and 1,085.97 is: 1,629.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,425.78 : 5,140.13 = 1,085.97 : x
  2. Step 2: Convert to fraction form
    3,425.78/5,140.13 = 1,085.97/x
  3. Step 3: Cross multiply
    3,425.78x = 5,140.13 × 1,085.97
  4. Step 4: Simplify right side
    3,425.78x = 5,582,026.98
  5. Step 5: Solve for x
    x = 5,582,026.98/3,425.78
  6. Step 6: Final answer
    x = 1,629.42

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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.