Home / 3,894.23-5,374.10-2,125.80

Finding the Fourth Proportional to 3,894.23, 5,374.10 and 2,125.80

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Solution

The fourth proportional to 3,894.23, 5,374.10 and 2,125.80 is: 2,933.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,894.23 : 5,374.10 = 2,125.80 : x
  2. Step 2: Convert to fraction form
    3,894.23/5,374.10 = 2,125.80/x
  3. Step 3: Cross multiply
    3,894.23x = 5,374.10 × 2,125.80
  4. Step 4: Simplify right side
    3,894.23x = 11,424,255.14
  5. Step 5: Solve for x
    x = 11,424,255.14/3,894.23
  6. Step 6: Final answer
    x = 2,933.63

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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.