Home / 2,172.12-2,997.53-1,177.41

Finding the Fourth Proportional to 2,172.12, 2,997.53 and 1,177.41

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Solution

The fourth proportional to 2,172.12, 2,997.53 and 1,177.41 is: 1,624.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.12 : 2,997.53 = 1,177.41 : x
  2. Step 2: Convert to fraction form
    2,172.12/2,997.53 = 1,177.41/x
  3. Step 3: Cross multiply
    2,172.12x = 2,997.53 × 1,177.41
  4. Step 4: Simplify right side
    2,172.12x = 3,529,321.80
  5. Step 5: Solve for x
    x = 3,529,321.80/2,172.12
  6. Step 6: Final answer
    x = 1,624.83

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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.