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Finding the Fourth Proportional to 2,449.80, 3,380.72 and 1,330.74

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Solution

The fourth proportional to 2,449.80, 3,380.72 and 1,330.74 is: 1,836.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,449.80 : 3,380.72 = 1,330.74 : x
  2. Step 2: Convert to fraction form
    2,449.80/3,380.72 = 1,330.74/x
  3. Step 3: Cross multiply
    2,449.80x = 3,380.72 × 1,330.74
  4. Step 4: Simplify right side
    2,449.80x = 4,498,852.68
  5. Step 5: Solve for x
    x = 4,498,852.68/2,449.80
  6. Step 6: Final answer
    x = 1,836.42

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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.