Home / 2,078.72-3,118.08-1,200.68

Finding the Fourth Proportional to 2,078.72, 3,118.08 and 1,200.68

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Solution

The fourth proportional to 2,078.72, 3,118.08 and 1,200.68 is: 1,801.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,078.72 : 3,118.08 = 1,200.68 : x
  2. Step 2: Convert to fraction form
    2,078.72/3,118.08 = 1,200.68/x
  3. Step 3: Cross multiply
    2,078.72x = 3,118.08 × 1,200.68
  4. Step 4: Simplify right side
    2,078.72x = 3,743,816.29
  5. Step 5: Solve for x
    x = 3,743,816.29/2,078.72
  6. Step 6: Final answer
    x = 1,801.02

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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.