Home / 2,087.09-3,128.58-1,163.09

Finding the Fourth Proportional to 2,087.09, 3,128.58 and 1,163.09

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Solution

The fourth proportional to 2,087.09, 3,128.58 and 1,163.09 is: 1,743.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,087.09 : 3,128.58 = 1,163.09 : x
  2. Step 2: Convert to fraction form
    2,087.09/3,128.58 = 1,163.09/x
  3. Step 3: Cross multiply
    2,087.09x = 3,128.58 × 1,163.09
  4. Step 4: Simplify right side
    2,087.09x = 3,638,804.47
  5. Step 5: Solve for x
    x = 3,638,804.47/2,087.09
  6. Step 6: Final answer
    x = 1,743.48

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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.