Home / 2,151.26-3,227.55-853.64

Finding the Fourth Proportional to 2,151.26, 3,227.55 and 853.64

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Solution

The fourth proportional to 2,151.26, 3,227.55 and 853.64 is: 1,280.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151.26 : 3,227.55 = 853.64 : x
  2. Step 2: Convert to fraction form
    2,151.26/3,227.55 = 853.64/x
  3. Step 3: Cross multiply
    2,151.26x = 3,227.55 × 853.64
  4. Step 4: Simplify right side
    2,151.26x = 2,755,158.55
  5. Step 5: Solve for x
    x = 2,755,158.55/2,151.26
  6. Step 6: Final answer
    x = 1,280.72

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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.