Home / 3,828.09-5,281.61-2,149.32

Finding the Fourth Proportional to 3,828.09, 5,281.61 and 2,149.32

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Solution

The fourth proportional to 3,828.09, 5,281.61 and 2,149.32 is: 2,965.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,828.09 : 5,281.61 = 2,149.32 : x
  2. Step 2: Convert to fraction form
    3,828.09/5,281.61 = 2,149.32/x
  3. Step 3: Cross multiply
    3,828.09x = 5,281.61 × 2,149.32
  4. Step 4: Simplify right side
    3,828.09x = 11,351,859.26
  5. Step 5: Solve for x
    x = 11,351,859.26/3,828.09
  6. Step 6: Final answer
    x = 2,965.41

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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.