Home / 3,968.28-5,475.84-2,199.84

Finding the Fourth Proportional to 3,968.28, 5,475.84 and 2,199.84

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Solution

The fourth proportional to 3,968.28, 5,475.84 and 2,199.84 is: 3,035.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,968.28 : 5,475.84 = 2,199.84 : x
  2. Step 2: Convert to fraction form
    3,968.28/5,475.84 = 2,199.84/x
  3. Step 3: Cross multiply
    3,968.28x = 5,475.84 × 2,199.84
  4. Step 4: Simplify right side
    3,968.28x = 12,045,971.87
  5. Step 5: Solve for x
    x = 12,045,971.87/3,968.28
  6. Step 6: Final answer
    x = 3,035.56

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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.