Home / 3,611.88-5,418.36-3,146.31

Finding the Fourth Proportional to 3,611.88, 5,418.36 and 3,146.31

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Solution

The fourth proportional to 3,611.88, 5,418.36 and 3,146.31 is: 4,719.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,611.88 : 5,418.36 = 3,146.31 : x
  2. Step 2: Convert to fraction form
    3,611.88/5,418.36 = 3,146.31/x
  3. Step 3: Cross multiply
    3,611.88x = 5,418.36 × 3,146.31
  4. Step 4: Simplify right side
    3,611.88x = 17,047,840.25
  5. Step 5: Solve for x
    x = 17,047,840.25/3,611.88
  6. Step 6: Final answer
    x = 4,719.94

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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.