Home / 3,968.20-5,476.16-2,199.84

Finding the Fourth Proportional to 3,968.20, 5,476.16 and 2,199.84

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Solution

The fourth proportional to 3,968.20, 5,476.16 and 2,199.84 is: 3,035.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,968.20 : 5,476.16 = 2,199.84 : x
  2. Step 2: Convert to fraction form
    3,968.20/5,476.16 = 2,199.84/x
  3. Step 3: Cross multiply
    3,968.20x = 5,476.16 × 2,199.84
  4. Step 4: Simplify right side
    3,968.20x = 12,046,675.81
  5. Step 5: Solve for x
    x = 12,046,675.81/3,968.20
  6. Step 6: Final answer
    x = 3,035.80

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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.