Home / 3,894.38-5,373.97-2,215.76

Finding the Fourth Proportional to 3,894.38, 5,373.97 and 2,215.76

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Solution

The fourth proportional to 3,894.38, 5,373.97 and 2,215.76 is: 3,057.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,894.38 : 5,373.97 = 2,215.76 : x
  2. Step 2: Convert to fraction form
    3,894.38/5,373.97 = 2,215.76/x
  3. Step 3: Cross multiply
    3,894.38x = 5,373.97 × 2,215.76
  4. Step 4: Simplify right side
    3,894.38x = 11,907,401.59
  5. Step 5: Solve for x
    x = 11,907,401.59/3,894.38
  6. Step 6: Final answer
    x = 3,057.59

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1.5x scale

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.