Home / 3,968.10-5,476.98-2,789.58

Finding the Fourth Proportional to 3,968.10, 5,476.98 and 2,789.58

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Solution

The fourth proportional to 3,968.10, 5,476.98 and 2,789.58 is: 3,850.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,968.10 : 5,476.98 = 2,789.58 : x
  2. Step 2: Convert to fraction form
    3,968.10/5,476.98 = 2,789.58/x
  3. Step 3: Cross multiply
    3,968.10x = 5,476.98 × 2,789.58
  4. Step 4: Simplify right side
    3,968.10x = 15,278,473.87
  5. Step 5: Solve for x
    x = 15,278,473.87/3,968.10
  6. Step 6: Final answer
    x = 3,850.32

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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.