Home / 3,828.21-5,283.21-2,126.81

Finding the Fourth Proportional to 3,828.21, 5,283.21 and 2,126.81

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Solution

The fourth proportional to 3,828.21, 5,283.21 and 2,126.81 is: 2,935.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,828.21 : 5,283.21 = 2,126.81 : x
  2. Step 2: Convert to fraction form
    3,828.21/5,283.21 = 2,126.81/x
  3. Step 3: Cross multiply
    3,828.21x = 5,283.21 × 2,126.81
  4. Step 4: Simplify right side
    3,828.21x = 11,236,357.44
  5. Step 5: Solve for x
    x = 11,236,357.44/3,828.21
  6. Step 6: Final answer
    x = 2,935.15

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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.