Home / 3,101.44-4,280.74-1,906.72

Finding the Fourth Proportional to 3,101.44, 4,280.74 and 1,906.72

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Solution

The fourth proportional to 3,101.44, 4,280.74 and 1,906.72 is: 2,631.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,101.44 : 4,280.74 = 1,906.72 : x
  2. Step 2: Convert to fraction form
    3,101.44/4,280.74 = 1,906.72/x
  3. Step 3: Cross multiply
    3,101.44x = 4,280.74 × 1,906.72
  4. Step 4: Simplify right side
    3,101.44x = 8,162,172.57
  5. Step 5: Solve for x
    x = 8,162,172.57/3,101.44
  6. Step 6: Final answer
    x = 2,631.74

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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.