Home / 3,968.10-5,475.90-2,199.60

Finding the Fourth Proportional to 3,968.10, 5,475.90 and 2,199.60

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Solution

The fourth proportional to 3,968.10, 5,475.90 and 2,199.60 is: 3,035.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,968.10 : 5,475.90 = 2,199.60 : x
  2. Step 2: Convert to fraction form
    3,968.10/5,475.90 = 2,199.60/x
  3. Step 3: Cross multiply
    3,968.10x = 5,475.90 × 2,199.60
  4. Step 4: Simplify right side
    3,968.10x = 12,044,789.64
  5. Step 5: Solve for x
    x = 12,044,789.64/3,968.10
  6. Step 6: Final answer
    x = 3,035.40

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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.