Home / 2,720.62-4,078.78-1,160.88

Finding the Fourth Proportional to 2,720.62, 4,078.78 and 1,160.88

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Solution

The fourth proportional to 2,720.62, 4,078.78 and 1,160.88 is: 1,740.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,720.62 : 4,078.78 = 1,160.88 : x
  2. Step 2: Convert to fraction form
    2,720.62/4,078.78 = 1,160.88/x
  3. Step 3: Cross multiply
    2,720.62x = 4,078.78 × 1,160.88
  4. Step 4: Simplify right side
    2,720.62x = 4,734,974.13
  5. Step 5: Solve for x
    x = 4,734,974.13/2,720.62
  6. Step 6: Final answer
    x = 1,740.40

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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.