Home / 2,720.77-4,078.24-1,076.60

Finding the Fourth Proportional to 2,720.77, 4,078.24 and 1,076.60

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Solution

The fourth proportional to 2,720.77, 4,078.24 and 1,076.60 is: 1,613.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.77 : 4,078.24 = 1,076.60 : x
  2. Step 2: Convert to fraction form
    2,720.77/4,078.24 = 1,076.60/x
  3. Step 3: Cross multiply
    2,720.77x = 4,078.24 × 1,076.60
  4. Step 4: Simplify right side
    2,720.77x = 4,390,633.18
  5. Step 5: Solve for x
    x = 4,390,633.18/2,720.77
  6. Step 6: Final answer
    x = 1,613.75

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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.