Home / 2,584.36-3,871.99-2,121.45

Finding the Fourth Proportional to 2,584.36, 3,871.99 and 2,121.45

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Solution

The fourth proportional to 2,584.36, 3,871.99 and 2,121.45 is: 3,178.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,584.36 : 3,871.99 = 2,121.45 : x
  2. Step 2: Convert to fraction form
    2,584.36/3,871.99 = 2,121.45/x
  3. Step 3: Cross multiply
    2,584.36x = 3,871.99 × 2,121.45
  4. Step 4: Simplify right side
    2,584.36x = 8,214,233.19
  5. Step 5: Solve for x
    x = 8,214,233.19/2,584.36
  6. Step 6: Final answer
    x = 3,178.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.