Home / 2,078.14-3,117.12-845.50

Finding the Fourth Proportional to 2,078.14, 3,117.12 and 845.50

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Solution

The fourth proportional to 2,078.14, 3,117.12 and 845.50 is: 1,268.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,078.14 : 3,117.12 = 845.50 : x
  2. Step 2: Convert to fraction form
    2,078.14/3,117.12 = 845.50/x
  3. Step 3: Cross multiply
    2,078.14x = 3,117.12 × 845.50
  4. Step 4: Simplify right side
    2,078.14x = 2,635,524.96
  5. Step 5: Solve for x
    x = 2,635,524.96/2,078.14
  6. Step 6: Final answer
    x = 1,268.21

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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.