Home / 2,172.08-2,997.29-1,227.95

Finding the Fourth Proportional to 2,172.08, 2,997.29 and 1,227.95

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Solution

The fourth proportional to 2,172.08, 2,997.29 and 1,227.95 is: 1,694.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.08 : 2,997.29 = 1,227.95 : x
  2. Step 2: Convert to fraction form
    2,172.08/2,997.29 = 1,227.95/x
  3. Step 3: Cross multiply
    2,172.08x = 2,997.29 × 1,227.95
  4. Step 4: Simplify right side
    2,172.08x = 3,680,522.26
  5. Step 5: Solve for x
    x = 3,680,522.26/2,172.08
  6. Step 6: Final answer
    x = 1,694.47

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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.