Home / 3,121.95-4,308.39-1,795.98

Finding the Fourth Proportional to 3,121.95, 4,308.39 and 1,795.98

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Solution

The fourth proportional to 3,121.95, 4,308.39 and 1,795.98 is: 2,478.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.95 : 4,308.39 = 1,795.98 : x
  2. Step 2: Convert to fraction form
    3,121.95/4,308.39 = 1,795.98/x
  3. Step 3: Cross multiply
    3,121.95x = 4,308.39 × 1,795.98
  4. Step 4: Simplify right side
    3,121.95x = 7,737,782.27
  5. Step 5: Solve for x
    x = 7,737,782.27/3,121.95
  6. Step 6: Final answer
    x = 2,478.51

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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.