Home / 2,163.36-2,986.56-1,325.28

Finding the Fourth Proportional to 2,163.36, 2,986.56 and 1,325.28

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Solution

The fourth proportional to 2,163.36, 2,986.56 and 1,325.28 is: 1,829.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,163.36 : 2,986.56 = 1,325.28 : x
  2. Step 2: Convert to fraction form
    2,163.36/2,986.56 = 1,325.28/x
  3. Step 3: Cross multiply
    2,163.36x = 2,986.56 × 1,325.28
  4. Step 4: Simplify right side
    2,163.36x = 3,958,028.24
  5. Step 5: Solve for x
    x = 3,958,028.24/2,163.36
  6. Step 6: Final answer
    x = 1,829.57

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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.