Home / 3,885.54-5,361.96-2,160.76

Finding the Fourth Proportional to 3,885.54, 5,361.96 and 2,160.76

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Solution

The fourth proportional to 3,885.54, 5,361.96 and 2,160.76 is: 2,981.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,885.54 : 5,361.96 = 2,160.76 : x
  2. Step 2: Convert to fraction form
    3,885.54/5,361.96 = 2,160.76/x
  3. Step 3: Cross multiply
    3,885.54x = 5,361.96 × 2,160.76
  4. Step 4: Simplify right side
    3,885.54x = 11,585,908.69
  5. Step 5: Solve for x
    x = 11,585,908.69/3,885.54
  6. Step 6: Final answer
    x = 2,981.80

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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.