Home / 1,939.14-2,676.21-1,142.71

Finding the Fourth Proportional to 1,939.14, 2,676.21 and 1,142.71

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Solution

The fourth proportional to 1,939.14, 2,676.21 and 1,142.71 is: 1,577.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.14 : 2,676.21 = 1,142.71 : x
  2. Step 2: Convert to fraction form
    1,939.14/2,676.21 = 1,142.71/x
  3. Step 3: Cross multiply
    1,939.14x = 2,676.21 × 1,142.71
  4. Step 4: Simplify right side
    1,939.14x = 3,058,145.72
  5. Step 5: Solve for x
    x = 3,058,145.72/1,939.14
  6. Step 6: Final answer
    x = 1,577.06

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1.5x scale

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.