Home / 2,481.98-3,422.84-1,920.64

Finding the Fourth Proportional to 2,481.98, 3,422.84 and 1,920.64

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Solution

The fourth proportional to 2,481.98, 3,422.84 and 1,920.64 is: 2,648.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,481.98 : 3,422.84 = 1,920.64 : x
  2. Step 2: Convert to fraction form
    2,481.98/3,422.84 = 1,920.64/x
  3. Step 3: Cross multiply
    2,481.98x = 3,422.84 × 1,920.64
  4. Step 4: Simplify right side
    2,481.98x = 6,574,043.42
  5. Step 5: Solve for x
    x = 6,574,043.42/2,481.98
  6. Step 6: Final answer
    x = 2,648.71

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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.