Home / 3,869.41-5,339.62-2,100.98

Finding the Fourth Proportional to 3,869.41, 5,339.62 and 2,100.98

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Solution

The fourth proportional to 3,869.41, 5,339.62 and 2,100.98 is: 2,899.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,869.41 : 5,339.62 = 2,100.98 : x
  2. Step 2: Convert to fraction form
    3,869.41/5,339.62 = 2,100.98/x
  3. Step 3: Cross multiply
    3,869.41x = 5,339.62 × 2,100.98
  4. Step 4: Simplify right side
    3,869.41x = 11,218,434.83
  5. Step 5: Solve for x
    x = 11,218,434.83/3,869.41
  6. Step 6: Final answer
    x = 2,899.26

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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.