Home / 2,853.41-4,280.38-1,121.63

Finding the Fourth Proportional to 2,853.41, 4,280.38 and 1,121.63

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Solution

The fourth proportional to 2,853.41, 4,280.38 and 1,121.63 is: 1,682.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,853.41 : 4,280.38 = 1,121.63 : x
  2. Step 2: Convert to fraction form
    2,853.41/4,280.38 = 1,121.63/x
  3. Step 3: Cross multiply
    2,853.41x = 4,280.38 × 1,121.63
  4. Step 4: Simplify right side
    2,853.41x = 4,800,978.41
  5. Step 5: Solve for x
    x = 4,800,978.41/2,853.41
  6. Step 6: Final answer
    x = 1,682.54

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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.