Home / 3,515.31-4,850.91-1,921.64

Finding the Fourth Proportional to 3,515.31, 4,850.91 and 1,921.64

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Solution

The fourth proportional to 3,515.31, 4,850.91 and 1,921.64 is: 2,651.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,515.31 : 4,850.91 = 1,921.64 : x
  2. Step 2: Convert to fraction form
    3,515.31/4,850.91 = 1,921.64/x
  3. Step 3: Cross multiply
    3,515.31x = 4,850.91 × 1,921.64
  4. Step 4: Simplify right side
    3,515.31x = 9,321,678.44
  5. Step 5: Solve for x
    x = 9,321,678.44/3,515.31
  6. Step 6: Final answer
    x = 2,651.74

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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.