Home / 2,172.47-2,997.97-1,228.26

Finding the Fourth Proportional to 2,172.47, 2,997.97 and 1,228.26

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Solution

The fourth proportional to 2,172.47, 2,997.97 and 1,228.26 is: 1,694.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.47 : 2,997.97 = 1,228.26 : x
  2. Step 2: Convert to fraction form
    2,172.47/2,997.97 = 1,228.26/x
  3. Step 3: Cross multiply
    2,172.47x = 2,997.97 × 1,228.26
  4. Step 4: Simplify right side
    2,172.47x = 3,682,283.56
  5. Step 5: Solve for x
    x = 3,682,283.56/2,172.47
  6. Step 6: Final answer
    x = 1,694.98

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1.5x scale

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.