Home / 3,894.29-5,374.26-2,215.85

Finding the Fourth Proportional to 3,894.29, 5,374.26 and 2,215.85

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Solution

The fourth proportional to 3,894.29, 5,374.26 and 2,215.85 is: 3,057.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,894.29 : 5,374.26 = 2,215.85 : x
  2. Step 2: Convert to fraction form
    3,894.29/5,374.26 = 2,215.85/x
  3. Step 3: Cross multiply
    3,894.29x = 5,374.26 × 2,215.85
  4. Step 4: Simplify right side
    3,894.29x = 11,908,527.15
  5. Step 5: Solve for x
    x = 11,908,527.15/3,894.29
  6. Step 6: Final answer
    x = 3,057.95

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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.