Home / 2,190.36-3,022.38-1,258.68

Finding the Fourth Proportional to 2,190.36, 3,022.38 and 1,258.68

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Solution

The fourth proportional to 2,190.36, 3,022.38 and 1,258.68 is: 1,736.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,190.36 : 3,022.38 = 1,258.68 : x
  2. Step 2: Convert to fraction form
    2,190.36/3,022.38 = 1,258.68/x
  3. Step 3: Cross multiply
    2,190.36x = 3,022.38 × 1,258.68
  4. Step 4: Simplify right side
    2,190.36x = 3,804,209.26
  5. Step 5: Solve for x
    x = 3,804,209.26/2,190.36
  6. Step 6: Final answer
    x = 1,736.80

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.