Home / 2,078.37-3,117.55-845.49

Finding the Fourth Proportional to 2,078.37, 3,117.55 and 845.49

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Solution

The fourth proportional to 2,078.37, 3,117.55 and 845.49 is: 1,268.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,078.37 : 3,117.55 = 845.49 : x
  2. Step 2: Convert to fraction form
    2,078.37/3,117.55 = 845.49/x
  3. Step 3: Cross multiply
    2,078.37x = 3,117.55 × 845.49
  4. Step 4: Simplify right side
    2,078.37x = 2,635,858.41
  5. Step 5: Solve for x
    x = 2,635,858.41/2,078.37
  6. Step 6: Final answer
    x = 1,268.23

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Double scale
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1.5x scale

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.