Home / 1,928.03-2,659.51-1,228.19

Finding the Fourth Proportional to 1,928.03, 2,659.51 and 1,228.19

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Solution

The fourth proportional to 1,928.03, 2,659.51 and 1,228.19 is: 1,694.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928.03 : 2,659.51 = 1,228.19 : x
  2. Step 2: Convert to fraction form
    1,928.03/2,659.51 = 1,228.19/x
  3. Step 3: Cross multiply
    1,928.03x = 2,659.51 × 1,228.19
  4. Step 4: Simplify right side
    1,928.03x = 3,266,383.59
  5. Step 5: Solve for x
    x = 3,266,383.59/1,928.03
  6. Step 6: Final answer
    x = 1,694.16

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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.