Home / 3,896.19-5,376.54-2,127.86

Finding the Fourth Proportional to 3,896.19, 5,376.54 and 2,127.86

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Solution

The fourth proportional to 3,896.19, 5,376.54 and 2,127.86 is: 2,936.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,896.19 : 5,376.54 = 2,127.86 : x
  2. Step 2: Convert to fraction form
    3,896.19/5,376.54 = 2,127.86/x
  3. Step 3: Cross multiply
    3,896.19x = 5,376.54 × 2,127.86
  4. Step 4: Simplify right side
    3,896.19x = 11,440,524.40
  5. Step 5: Solve for x
    x = 11,440,524.40/3,896.19
  6. Step 6: Final answer
    x = 2,936.34

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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.