Home / 3,881.42-5,356.35-2,113.02

Finding the Fourth Proportional to 3,881.42, 5,356.35 and 2,113.02

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Solution

The fourth proportional to 3,881.42, 5,356.35 and 2,113.02 is: 2,915.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,881.42 : 5,356.35 = 2,113.02 : x
  2. Step 2: Convert to fraction form
    3,881.42/5,356.35 = 2,113.02/x
  3. Step 3: Cross multiply
    3,881.42x = 5,356.35 × 2,113.02
  4. Step 4: Simplify right side
    3,881.42x = 11,318,074.68
  5. Step 5: Solve for x
    x = 11,318,074.68/3,881.42
  6. Step 6: Final answer
    x = 2,915.97

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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.