Home / 3,968.21-5,475.55-2,199.81

Finding the Fourth Proportional to 3,968.21, 5,475.55 and 2,199.81

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Solution

The fourth proportional to 3,968.21, 5,475.55 and 2,199.81 is: 3,035.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,968.21 : 5,475.55 = 2,199.81 : x
  2. Step 2: Convert to fraction form
    3,968.21/5,475.55 = 2,199.81/x
  3. Step 3: Cross multiply
    3,968.21x = 5,475.55 × 2,199.81
  4. Step 4: Simplify right side
    3,968.21x = 12,045,169.65
  5. Step 5: Solve for x
    x = 12,045,169.65/3,968.21
  6. Step 6: Final answer
    x = 3,035.42

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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.