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Finding the Fourth Proportional to 1,939.24, 2,907.24 and 1,785.48

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Solution

The fourth proportional to 1,939.24, 2,907.24 and 1,785.48 is: 2,676.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.24 : 2,907.24 = 1,785.48 : x
  2. Step 2: Convert to fraction form
    1,939.24/2,907.24 = 1,785.48/x
  3. Step 3: Cross multiply
    1,939.24x = 2,907.24 × 1,785.48
  4. Step 4: Simplify right side
    1,939.24x = 5,190,818.88
  5. Step 5: Solve for x
    x = 5,190,818.88/1,939.24
  6. Step 6: Final answer
    x = 2,676.73

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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.