Home / 2,078.45-3,111.60-1,835.45

Finding the Fourth Proportional to 2,078.45, 3,111.60 and 1,835.45

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Solution

The fourth proportional to 2,078.45, 3,111.60 and 1,835.45 is: 2,747.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,078.45 : 3,111.60 = 1,835.45 : x
  2. Step 2: Convert to fraction form
    2,078.45/3,111.60 = 1,835.45/x
  3. Step 3: Cross multiply
    2,078.45x = 3,111.60 × 1,835.45
  4. Step 4: Simplify right side
    2,078.45x = 5,711,186.22
  5. Step 5: Solve for x
    x = 5,711,186.22/2,078.45
  6. Step 6: Final answer
    x = 2,747.81

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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.