Home / 3,380.14-4,639.78-2,998.78

Finding the Fourth Proportional to 3,380.14, 4,639.78 and 2,998.78

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Solution

The fourth proportional to 3,380.14, 4,639.78 and 2,998.78 is: 4,116.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,380.14 : 4,639.78 = 2,998.78 : x
  2. Step 2: Convert to fraction form
    3,380.14/4,639.78 = 2,998.78/x
  3. Step 3: Cross multiply
    3,380.14x = 4,639.78 × 2,998.78
  4. Step 4: Simplify right side
    3,380.14x = 13,913,679.47
  5. Step 5: Solve for x
    x = 13,913,679.47/3,380.14
  6. Step 6: Final answer
    x = 4,116.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.