Home / 1,905.54-2,855.96-1,124.75

Finding the Fourth Proportional to 1,905.54, 2,855.96 and 1,124.75

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Solution

The fourth proportional to 1,905.54, 2,855.96 and 1,124.75 is: 1,685.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,905.54 : 2,855.96 = 1,124.75 : x
  2. Step 2: Convert to fraction form
    1,905.54/2,855.96 = 1,124.75/x
  3. Step 3: Cross multiply
    1,905.54x = 2,855.96 × 1,124.75
  4. Step 4: Simplify right side
    1,905.54x = 3,212,235.39
  5. Step 5: Solve for x
    x = 3,212,235.39/1,905.54
  6. Step 6: Final answer
    x = 1,685.73

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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.