Home / 2,481.68-3,422.52-1,890.80

Finding the Fourth Proportional to 2,481.68, 3,422.52 and 1,890.80

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Solution

The fourth proportional to 2,481.68, 3,422.52 and 1,890.80 is: 2,607.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,481.68 : 3,422.52 = 1,890.80 : x
  2. Step 2: Convert to fraction form
    2,481.68/3,422.52 = 1,890.80/x
  3. Step 3: Cross multiply
    2,481.68x = 3,422.52 × 1,890.80
  4. Step 4: Simplify right side
    2,481.68x = 6,471,300.82
  5. Step 5: Solve for x
    x = 6,471,300.82/2,481.68
  6. Step 6: Final answer
    x = 2,607.63

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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.