Home / 2,078.55-3,117.83-1,106.55

Finding the Fourth Proportional to 2,078.55, 3,117.83 and 1,106.55

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Solution

The fourth proportional to 2,078.55, 3,117.83 and 1,106.55 is: 1,659.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,078.55 : 3,117.83 = 1,106.55 : x
  2. Step 2: Convert to fraction form
    2,078.55/3,117.83 = 1,106.55/x
  3. Step 3: Cross multiply
    2,078.55x = 3,117.83 × 1,106.55
  4. Step 4: Simplify right side
    2,078.55x = 3,450,029.25
  5. Step 5: Solve for x
    x = 3,450,029.25/2,078.55
  6. Step 6: Final answer
    x = 1,659.83

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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.