Home / 3,894.19-5,374.07-2,125.78

Finding the Fourth Proportional to 3,894.19, 5,374.07 and 2,125.78

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Solution

The fourth proportional to 3,894.19, 5,374.07 and 2,125.78 is: 2,933.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,894.19 : 5,374.07 = 2,125.78 : x
  2. Step 2: Convert to fraction form
    3,894.19/5,374.07 = 2,125.78/x
  3. Step 3: Cross multiply
    3,894.19x = 5,374.07 × 2,125.78
  4. Step 4: Simplify right side
    3,894.19x = 11,424,090.52
  5. Step 5: Solve for x
    x = 11,424,090.52/3,894.19
  6. Step 6: Final answer
    x = 2,933.62

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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.