Home / 3,076.40-4,603.80-2,147.60

Finding the Fourth Proportional to 3,076.40, 4,603.80 and 2,147.60

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Solution

The fourth proportional to 3,076.40, 4,603.80 and 2,147.60 is: 3,213.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,076.40 : 4,603.80 = 2,147.60 : x
  2. Step 2: Convert to fraction form
    3,076.40/4,603.80 = 2,147.60/x
  3. Step 3: Cross multiply
    3,076.40x = 4,603.80 × 2,147.60
  4. Step 4: Simplify right side
    3,076.40x = 9,887,120.88
  5. Step 5: Solve for x
    x = 9,887,120.88/3,076.40
  6. Step 6: Final answer
    x = 3,213.86

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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.