Home / 2,850.21-3,935.06-2,185.79

Finding the Fourth Proportional to 2,850.21, 3,935.06 and 2,185.79

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Solution

The fourth proportional to 2,850.21, 3,935.06 and 2,185.79 is: 3,017.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,850.21 : 3,935.06 = 2,185.79 : x
  2. Step 2: Convert to fraction form
    2,850.21/3,935.06 = 2,185.79/x
  3. Step 3: Cross multiply
    2,850.21x = 3,935.06 × 2,185.79
  4. Step 4: Simplify right side
    2,850.21x = 8,601,184.19
  5. Step 5: Solve for x
    x = 8,601,184.19/2,850.21
  6. Step 6: Final answer
    x = 3,017.74

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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.