Home / 2,856.41-3,941.92-2,018.60

Finding the Fourth Proportional to 2,856.41, 3,941.92 and 2,018.60

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Solution

The fourth proportional to 2,856.41, 3,941.92 and 2,018.60 is: 2,785.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,856.41 : 3,941.92 = 2,018.60 : x
  2. Step 2: Convert to fraction form
    2,856.41/3,941.92 = 2,018.60/x
  3. Step 3: Cross multiply
    2,856.41x = 3,941.92 × 2,018.60
  4. Step 4: Simplify right side
    2,856.41x = 7,957,134.87
  5. Step 5: Solve for x
    x = 7,957,134.87/2,856.41
  6. Step 6: Final answer
    x = 2,785.71

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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.