Home / 2,168.39-3,254.40-1,128.75

Finding the Fourth Proportional to 2,168.39, 3,254.40 and 1,128.75

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Solution

The fourth proportional to 2,168.39, 3,254.40 and 1,128.75 is: 1,694.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,168.39 : 3,254.40 = 1,128.75 : x
  2. Step 2: Convert to fraction form
    2,168.39/3,254.40 = 1,128.75/x
  3. Step 3: Cross multiply
    2,168.39x = 3,254.40 × 1,128.75
  4. Step 4: Simplify right side
    2,168.39x = 3,673,404
  5. Step 5: Solve for x
    x = 3,673,404/2,168.39
  6. Step 6: Final answer
    x = 1,694.07

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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.