Home / 3,869.06-5,339.16-2,100.63

Finding the Fourth Proportional to 3,869.06, 5,339.16 and 2,100.63

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Solution

The fourth proportional to 3,869.06, 5,339.16 and 2,100.63 is: 2,898.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869.06 : 5,339.16 = 2,100.63 : x
  2. Step 2: Convert to fraction form
    3,869.06/5,339.16 = 2,100.63/x
  3. Step 3: Cross multiply
    3,869.06x = 5,339.16 × 2,100.63
  4. Step 4: Simplify right side
    3,869.06x = 11,215,604.92
  5. Step 5: Solve for x
    x = 11,215,604.92/3,869.06
  6. Step 6: Final answer
    x = 2,898.79

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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.