Home / 3,854.95-5,319.88-2,086.60

Finding the Fourth Proportional to 3,854.95, 5,319.88 and 2,086.60

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Solution

The fourth proportional to 3,854.95, 5,319.88 and 2,086.60 is: 2,879.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,854.95 : 5,319.88 = 2,086.60 : x
  2. Step 2: Convert to fraction form
    3,854.95/5,319.88 = 2,086.60/x
  3. Step 3: Cross multiply
    3,854.95x = 5,319.88 × 2,086.60
  4. Step 4: Simplify right side
    3,854.95x = 11,100,453.07
  5. Step 5: Solve for x
    x = 11,100,453.07/3,854.95
  6. Step 6: Final answer
    x = 2,879.53

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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.