Home / 3,854.09-5,318.66-2,085.70

Finding the Fourth Proportional to 3,854.09, 5,318.66 and 2,085.70

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Solution

The fourth proportional to 3,854.09, 5,318.66 and 2,085.70 is: 2,878.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,854.09 : 5,318.66 = 2,085.70 : x
  2. Step 2: Convert to fraction form
    3,854.09/5,318.66 = 2,085.70/x
  3. Step 3: Cross multiply
    3,854.09x = 5,318.66 × 2,085.70
  4. Step 4: Simplify right side
    3,854.09x = 11,093,105.44
  5. Step 5: Solve for x
    x = 11,093,105.44/3,854.09
  6. Step 6: Final answer
    x = 2,878.27

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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.