Home / 3,600.40-5,400.60-2,045.20

Finding the Fourth Proportional to 3,600.40, 5,400.60 and 2,045.20

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Solution

The fourth proportional to 3,600.40, 5,400.60 and 2,045.20 is: 3,067.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,600.40 : 5,400.60 = 2,045.20 : x
  2. Step 2: Convert to fraction form
    3,600.40/5,400.60 = 2,045.20/x
  3. Step 3: Cross multiply
    3,600.40x = 5,400.60 × 2,045.20
  4. Step 4: Simplify right side
    3,600.40x = 11,045,307.12
  5. Step 5: Solve for x
    x = 11,045,307.12/3,600.40
  6. Step 6: Final answer
    x = 3,067.80

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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.