Home / 3,884.87-5,361.12-2,116.49

Finding the Fourth Proportional to 3,884.87, 5,361.12 and 2,116.49

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Solution

The fourth proportional to 3,884.87, 5,361.12 and 2,116.49 is: 2,920.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,884.87 : 5,361.12 = 2,116.49 : x
  2. Step 2: Convert to fraction form
    3,884.87/5,361.12 = 2,116.49/x
  3. Step 3: Cross multiply
    3,884.87x = 5,361.12 × 2,116.49
  4. Step 4: Simplify right side
    3,884.87x = 11,346,756.87
  5. Step 5: Solve for x
    x = 11,346,756.87/3,884.87
  6. Step 6: Final answer
    x = 2,920.76

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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.