Home / 3,859.49-5,326.12-2,091.11

Finding the Fourth Proportional to 3,859.49, 5,326.12 and 2,091.11

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Solution

The fourth proportional to 3,859.49, 5,326.12 and 2,091.11 is: 2,885.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,859.49 : 5,326.12 = 2,091.11 : x
  2. Step 2: Convert to fraction form
    3,859.49/5,326.12 = 2,091.11/x
  3. Step 3: Cross multiply
    3,859.49x = 5,326.12 × 2,091.11
  4. Step 4: Simplify right side
    3,859.49x = 11,137,476.16
  5. Step 5: Solve for x
    x = 11,137,476.16/3,859.49
  6. Step 6: Final answer
    x = 2,885.74

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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.