Home / 3,859.97-5,326.70-2,091.56

Finding the Fourth Proportional to 3,859.97, 5,326.70 and 2,091.56

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Solution

The fourth proportional to 3,859.97, 5,326.70 and 2,091.56 is: 2,886.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,859.97 : 5,326.70 = 2,091.56 : x
  2. Step 2: Convert to fraction form
    3,859.97/5,326.70 = 2,091.56/x
  3. Step 3: Cross multiply
    3,859.97x = 5,326.70 × 2,091.56
  4. Step 4: Simplify right side
    3,859.97x = 11,141,075.56
  5. Step 5: Solve for x
    x = 11,141,075.56/3,859.97
  6. Step 6: Final answer
    x = 2,886.32

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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.