Home / 2,122.12-3,179.94-1,901.26

Finding the Fourth Proportional to 2,122.12, 3,179.94 and 1,901.26

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Solution

The fourth proportional to 2,122.12, 3,179.94 and 1,901.26 is: 2,848.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.12 : 3,179.94 = 1,901.26 : x
  2. Step 2: Convert to fraction form
    2,122.12/3,179.94 = 1,901.26/x
  3. Step 3: Cross multiply
    2,122.12x = 3,179.94 × 1,901.26
  4. Step 4: Simplify right side
    2,122.12x = 6,045,892.72
  5. Step 5: Solve for x
    x = 6,045,892.72/2,122.12
  6. Step 6: Final answer
    x = 2,848.99

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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.