Home / 2,577.20-3,863.40-2,021.60

Finding the Fourth Proportional to 2,577.20, 3,863.40 and 2,021.60

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Solution

The fourth proportional to 2,577.20, 3,863.40 and 2,021.60 is: 3,030.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,577.20 : 3,863.40 = 2,021.60 : x
  2. Step 2: Convert to fraction form
    2,577.20/3,863.40 = 2,021.60/x
  3. Step 3: Cross multiply
    2,577.20x = 3,863.40 × 2,021.60
  4. Step 4: Simplify right side
    2,577.20x = 7,810,249.44
  5. Step 5: Solve for x
    x = 7,810,249.44/2,577.20
  6. Step 6: Final answer
    x = 3,030.52

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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.