Home / 2,108.36-3,163.80-1,943.12

Finding the Fourth Proportional to 2,108.36, 3,163.80 and 1,943.12

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Solution

The fourth proportional to 2,108.36, 3,163.80 and 1,943.12 is: 2,915.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,108.36 : 3,163.80 = 1,943.12 : x
  2. Step 2: Convert to fraction form
    2,108.36/3,163.80 = 1,943.12/x
  3. Step 3: Cross multiply
    2,108.36x = 3,163.80 × 1,943.12
  4. Step 4: Simplify right side
    2,108.36x = 6,147,643.06
  5. Step 5: Solve for x
    x = 6,147,643.06/2,108.36
  6. Step 6: Final answer
    x = 2,915.84

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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.