Home / 1,939.17-2,908.23-1,322.76

Finding the Fourth Proportional to 1,939.17, 2,908.23 and 1,322.76

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Solution

The fourth proportional to 1,939.17, 2,908.23 and 1,322.76 is: 1,983.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.17 : 2,908.23 = 1,322.76 : x
  2. Step 2: Convert to fraction form
    1,939.17/2,908.23 = 1,322.76/x
  3. Step 3: Cross multiply
    1,939.17x = 2,908.23 × 1,322.76
  4. Step 4: Simplify right side
    1,939.17x = 3,846,890.31
  5. Step 5: Solve for x
    x = 3,846,890.31/1,939.17
  6. Step 6: Final answer
    x = 1,983.78

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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.