Home / 3,809.11-5,257.05-2,130.61

Finding the Fourth Proportional to 3,809.11, 5,257.05 and 2,130.61

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Solution

The fourth proportional to 3,809.11, 5,257.05 and 2,130.61 is: 2,940.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,809.11 : 5,257.05 = 2,130.61 : x
  2. Step 2: Convert to fraction form
    3,809.11/5,257.05 = 2,130.61/x
  3. Step 3: Cross multiply
    3,809.11x = 5,257.05 × 2,130.61
  4. Step 4: Simplify right side
    3,809.11x = 11,200,710.16
  5. Step 5: Solve for x
    x = 11,200,710.16/3,809.11
  6. Step 6: Final answer
    x = 2,940.51

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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.