Home / 2,561.10-3,837.60-2,212.80

Finding the Fourth Proportional to 2,561.10, 3,837.60 and 2,212.80

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Solution

The fourth proportional to 2,561.10, 3,837.60 and 2,212.80 is: 3,315.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,561.10 : 3,837.60 = 2,212.80 : x
  2. Step 2: Convert to fraction form
    2,561.10/3,837.60 = 2,212.80/x
  3. Step 3: Cross multiply
    2,561.10x = 3,837.60 × 2,212.80
  4. Step 4: Simplify right side
    2,561.10x = 8,491,841.28
  5. Step 5: Solve for x
    x = 8,491,841.28/2,561.10
  6. Step 6: Final answer
    x = 3,315.70

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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.