Home / 3,512.94-5,268.80-1,321.28

Finding the Fourth Proportional to 3,512.94, 5,268.80 and 1,321.28

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Solution

The fourth proportional to 3,512.94, 5,268.80 and 1,321.28 is: 1,981.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,512.94 : 5,268.80 = 1,321.28 : x
  2. Step 2: Convert to fraction form
    3,512.94/5,268.80 = 1,321.28/x
  3. Step 3: Cross multiply
    3,512.94x = 5,268.80 × 1,321.28
  4. Step 4: Simplify right side
    3,512.94x = 6,961,560.06
  5. Step 5: Solve for x
    x = 6,961,560.06/3,512.94
  6. Step 6: Final answer
    x = 1,981.69

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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.