Home / 2,611.28-3,915.35-1,028.11

Finding the Fourth Proportional to 2,611.28, 3,915.35 and 1,028.11

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Solution

The fourth proportional to 2,611.28, 3,915.35 and 1,028.11 is: 1,541.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,611.28 : 3,915.35 = 1,028.11 : x
  2. Step 2: Convert to fraction form
    2,611.28/3,915.35 = 1,028.11/x
  3. Step 3: Cross multiply
    2,611.28x = 3,915.35 × 1,028.11
  4. Step 4: Simplify right side
    2,611.28x = 4,025,395.56
  5. Step 5: Solve for x
    x = 4,025,395.56/2,611.28
  6. Step 6: Final answer
    x = 1,541.54

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.