Home / 3,215.12-4,832.88-2,986.82

Finding the Fourth Proportional to 3,215.12, 4,832.88 and 2,986.82

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Solution

The fourth proportional to 3,215.12, 4,832.88 and 2,986.82 is: 4,489.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.12 : 4,832.88 = 2,986.82 : x
  2. Step 2: Convert to fraction form
    3,215.12/4,832.88 = 2,986.82/x
  3. Step 3: Cross multiply
    3,215.12x = 4,832.88 × 2,986.82
  4. Step 4: Simplify right side
    3,215.12x = 14,434,942.64
  5. Step 5: Solve for x
    x = 14,434,942.64/3,215.12
  6. Step 6: Final answer
    x = 4,489.71

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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.