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Finding the Fourth Proportional to 2,611.05, 3,915.09 and 2,017.86

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Solution

The fourth proportional to 2,611.05, 3,915.09 and 2,017.86 is: 3,025.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,611.05 : 3,915.09 = 2,017.86 : x
  2. Step 2: Convert to fraction form
    2,611.05/3,915.09 = 2,017.86/x
  3. Step 3: Cross multiply
    2,611.05x = 3,915.09 × 2,017.86
  4. Step 4: Simplify right side
    2,611.05x = 7,900,103.51
  5. Step 5: Solve for x
    x = 7,900,103.51/2,611.05
  6. Step 6: Final answer
    x = 3,025.64

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1.5x scale

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.