Home / 3,611.12-5,416.72-1,271.02

Finding the Fourth Proportional to 3,611.12, 5,416.72 and 1,271.02

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Solution

The fourth proportional to 3,611.12, 5,416.72 and 1,271.02 is: 1,906.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,611.12 : 5,416.72 = 1,271.02 : x
  2. Step 2: Convert to fraction form
    3,611.12/5,416.72 = 1,271.02/x
  3. Step 3: Cross multiply
    3,611.12x = 5,416.72 × 1,271.02
  4. Step 4: Simplify right side
    3,611.12x = 6,884,759.45
  5. Step 5: Solve for x
    x = 6,884,759.45/3,611.12
  6. Step 6: Final answer
    x = 1,906.54

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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.