Home / 8,485.82-12,729.94-2,642.90

Finding the Fourth Proportional to 8,485.82, 12,729.94 and 2,642.90

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Solution

The fourth proportional to 8,485.82, 12,729.94 and 2,642.90 is: 3,964.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,485.82 : 12,729.94 = 2,642.90 : x
  2. Step 2: Convert to fraction form
    8,485.82/12,729.94 = 2,642.90/x
  3. Step 3: Cross multiply
    8,485.82x = 12,729.94 × 2,642.90
  4. Step 4: Simplify right side
    8,485.82x = 33,643,958.43
  5. Step 5: Solve for x
    x = 33,643,958.43/8,485.82
  6. Step 6: Final answer
    x = 3,964.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.