Home / 3,122.78-4,686.03-1,661.94

Finding the Fourth Proportional to 3,122.78, 4,686.03 and 1,661.94

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Solution

The fourth proportional to 3,122.78, 4,686.03 and 1,661.94 is: 2,493.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,122.78 : 4,686.03 = 1,661.94 : x
  2. Step 2: Convert to fraction form
    3,122.78/4,686.03 = 1,661.94/x
  3. Step 3: Cross multiply
    3,122.78x = 4,686.03 × 1,661.94
  4. Step 4: Simplify right side
    3,122.78x = 7,787,900.70
  5. Step 5: Solve for x
    x = 7,787,900.70/3,122.78
  6. Step 6: Final answer
    x = 2,493.90

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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.