Home / 1,988.25-2,743.86-1,104.05

Finding the Fourth Proportional to 1,988.25, 2,743.86 and 1,104.05

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Solution

The fourth proportional to 1,988.25, 2,743.86 and 1,104.05 is: 1,523.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,988.25 : 2,743.86 = 1,104.05 : x
  2. Step 2: Convert to fraction form
    1,988.25/2,743.86 = 1,104.05/x
  3. Step 3: Cross multiply
    1,988.25x = 2,743.86 × 1,104.05
  4. Step 4: Simplify right side
    1,988.25x = 3,029,353.16
  5. Step 5: Solve for x
    x = 3,029,353.16/1,988.25
  6. Step 6: Final answer
    x = 1,523.63

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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.