Home / 2,261.31-3,391.98-1,261.32

Finding the Fourth Proportional to 2,261.31, 3,391.98 and 1,261.32

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Solution

The fourth proportional to 2,261.31, 3,391.98 and 1,261.32 is: 1,891.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.31 : 3,391.98 = 1,261.32 : x
  2. Step 2: Convert to fraction form
    2,261.31/3,391.98 = 1,261.32/x
  3. Step 3: Cross multiply
    2,261.31x = 3,391.98 × 1,261.32
  4. Step 4: Simplify right side
    2,261.31x = 4,278,372.21
  5. Step 5: Solve for x
    x = 4,278,372.21/2,261.31
  6. Step 6: Final answer
    x = 1,891.99

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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.