Home / 3,885.45-5,361.96-2,117.04

Finding the Fourth Proportional to 3,885.45, 5,361.96 and 2,117.04

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Solution

The fourth proportional to 3,885.45, 5,361.96 and 2,117.04 is: 2,921.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,885.45 : 5,361.96 = 2,117.04 : x
  2. Step 2: Convert to fraction form
    3,885.45/5,361.96 = 2,117.04/x
  3. Step 3: Cross multiply
    3,885.45x = 5,361.96 × 2,117.04
  4. Step 4: Simplify right side
    3,885.45x = 11,351,483.80
  5. Step 5: Solve for x
    x = 11,351,483.80/3,885.45
  6. Step 6: Final answer
    x = 2,921.54

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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.