Home / 3,859.55-5,326.18-2,091.15

Finding the Fourth Proportional to 3,859.55, 5,326.18 and 2,091.15

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Solution

The fourth proportional to 3,859.55, 5,326.18 and 2,091.15 is: 2,885.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,859.55 : 5,326.18 = 2,091.15 : x
  2. Step 2: Convert to fraction form
    3,859.55/5,326.18 = 2,091.15/x
  3. Step 3: Cross multiply
    3,859.55x = 5,326.18 × 2,091.15
  4. Step 4: Simplify right side
    3,859.55x = 11,137,836.08
  5. Step 5: Solve for x
    x = 11,137,836.08/3,859.55
  6. Step 6: Final answer
    x = 2,885.79

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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.