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Finding the Fourth Proportional to 1,903.80, 2,867.75 and 1,731.58

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Solution

The fourth proportional to 1,903.80, 2,867.75 and 1,731.58 is: 2,608.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,903.80 : 2,867.75 = 1,731.58 : x
  2. Step 2: Convert to fraction form
    1,903.80/2,867.75 = 1,731.58/x
  3. Step 3: Cross multiply
    1,903.80x = 2,867.75 × 1,731.58
  4. Step 4: Simplify right side
    1,903.80x = 4,965,738.95
  5. Step 5: Solve for x
    x = 4,965,738.95/1,903.80
  6. Step 6: Final answer
    x = 2,608.33

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.