Home / 3,121.43-4,308.30-1,795.91

Finding the Fourth Proportional to 3,121.43, 4,308.30 and 1,795.91

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Solution

The fourth proportional to 3,121.43, 4,308.30 and 1,795.91 is: 2,478.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,121.43 : 4,308.30 = 1,795.91 : x
  2. Step 2: Convert to fraction form
    3,121.43/4,308.30 = 1,795.91/x
  3. Step 3: Cross multiply
    3,121.43x = 4,308.30 × 1,795.91
  4. Step 4: Simplify right side
    3,121.43x = 7,737,297.51
  5. Step 5: Solve for x
    x = 7,737,297.51/3,121.43
  6. Step 6: Final answer
    x = 2,478.77

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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.