Home / 3,682.32-5,079.96-2,189.76

Finding the Fourth Proportional to 3,682.32, 5,079.96 and 2,189.76

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Solution

The fourth proportional to 3,682.32, 5,079.96 and 2,189.76 is: 3,020.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,682.32 : 5,079.96 = 2,189.76 : x
  2. Step 2: Convert to fraction form
    3,682.32/5,079.96 = 2,189.76/x
  3. Step 3: Cross multiply
    3,682.32x = 5,079.96 × 2,189.76
  4. Step 4: Simplify right side
    3,682.32x = 11,123,893.21
  5. Step 5: Solve for x
    x = 11,123,893.21/3,682.32
  6. Step 6: Final answer
    x = 3,020.89

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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.