Home / 3,215.31-4,825.68-1,268.88

Finding the Fourth Proportional to 3,215.31, 4,825.68 and 1,268.88

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Solution

The fourth proportional to 3,215.31, 4,825.68 and 1,268.88 is: 1,904.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.31 : 4,825.68 = 1,268.88 : x
  2. Step 2: Convert to fraction form
    3,215.31/4,825.68 = 1,268.88/x
  3. Step 3: Cross multiply
    3,215.31x = 4,825.68 × 1,268.88
  4. Step 4: Simplify right side
    3,215.31x = 6,123,208.84
  5. Step 5: Solve for x
    x = 6,123,208.84/3,215.31
  6. Step 6: Final answer
    x = 1,904.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.