Home / 1,939.26-2,676.18-1,153.38

Finding the Fourth Proportional to 1,939.26, 2,676.18 and 1,153.38

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Solution

The fourth proportional to 1,939.26, 2,676.18 and 1,153.38 is: 1,591.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.26 : 2,676.18 = 1,153.38 : x
  2. Step 2: Convert to fraction form
    1,939.26/2,676.18 = 1,153.38/x
  3. Step 3: Cross multiply
    1,939.26x = 2,676.18 × 1,153.38
  4. Step 4: Simplify right side
    1,939.26x = 3,086,652.49
  5. Step 5: Solve for x
    x = 3,086,652.49/1,939.26
  6. Step 6: Final answer
    x = 1,591.67

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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.