Home / 1,928.26-2,660.61-1,229.50

Finding the Fourth Proportional to 1,928.26, 2,660.61 and 1,229.50

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Solution

The fourth proportional to 1,928.26, 2,660.61 and 1,229.50 is: 1,696.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,928.26 : 2,660.61 = 1,229.50 : x
  2. Step 2: Convert to fraction form
    1,928.26/2,660.61 = 1,229.50/x
  3. Step 3: Cross multiply
    1,928.26x = 2,660.61 × 1,229.50
  4. Step 4: Simplify right side
    1,928.26x = 3,271,220.00
  5. Step 5: Solve for x
    x = 3,271,220.00/1,928.26
  6. Step 6: Final answer
    x = 1,696.46

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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.