Home / 2,765.12-3,813.22-2,134.60

Finding the Fourth Proportional to 2,765.12, 3,813.22 and 2,134.60

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Solution

The fourth proportional to 2,765.12, 3,813.22 and 2,134.60 is: 2,943.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,765.12 : 3,813.22 = 2,134.60 : x
  2. Step 2: Convert to fraction form
    2,765.12/3,813.22 = 2,134.60/x
  3. Step 3: Cross multiply
    2,765.12x = 3,813.22 × 2,134.60
  4. Step 4: Simplify right side
    2,765.12x = 8,139,694.08
  5. Step 5: Solve for x
    x = 8,139,694.08/2,765.12
  6. Step 6: Final answer
    x = 2,943.71

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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.