Home / 2,122.26-2,928.33-1,282.40

Finding the Fourth Proportional to 2,122.26, 2,928.33 and 1,282.40

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Solution

The fourth proportional to 2,122.26, 2,928.33 and 1,282.40 is: 1,769.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,122.26 : 2,928.33 = 1,282.40 : x
  2. Step 2: Convert to fraction form
    2,122.26/2,928.33 = 1,282.40/x
  3. Step 3: Cross multiply
    2,122.26x = 2,928.33 × 1,282.40
  4. Step 4: Simplify right side
    2,122.26x = 3,755,290.39
  5. Step 5: Solve for x
    x = 3,755,290.39/2,122.26
  6. Step 6: Final answer
    x = 1,769.48

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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.