Home / 3,802-5,246.26-2,123.20

Finding the Fourth Proportional to 3,802, 5,246.26 and 2,123.20

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Solution

The fourth proportional to 3,802, 5,246.26 and 2,123.20 is: 2,929.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,802 : 5,246.26 = 2,123.20 : x
  2. Step 2: Convert to fraction form
    3,802/5,246.26 = 2,123.20/x
  3. Step 3: Cross multiply
    3,802x = 5,246.26 × 2,123.20
  4. Step 4: Simplify right side
    3,802x = 11,138,859.23
  5. Step 5: Solve for x
    x = 11,138,859.23/3,802
  6. Step 6: Final answer
    x = 2,929.74

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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.