Home / 2,449.82-3,378.20-1,890.38

Finding the Fourth Proportional to 2,449.82, 3,378.20 and 1,890.38

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Solution

The fourth proportional to 2,449.82, 3,378.20 and 1,890.38 is: 2,606.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,449.82 : 3,378.20 = 1,890.38 : x
  2. Step 2: Convert to fraction form
    2,449.82/3,378.20 = 1,890.38/x
  3. Step 3: Cross multiply
    2,449.82x = 3,378.20 × 1,890.38
  4. Step 4: Simplify right side
    2,449.82x = 6,386,081.72
  5. Step 5: Solve for x
    x = 6,386,081.72/2,449.82
  6. Step 6: Final answer
    x = 2,606.76

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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.