Home / 3,780.82-5,216.76-2,208.61

Finding the Fourth Proportional to 3,780.82, 5,216.76 and 2,208.61

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Solution

The fourth proportional to 3,780.82, 5,216.76 and 2,208.61 is: 3,047.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,780.82 : 5,216.76 = 2,208.61 : x
  2. Step 2: Convert to fraction form
    3,780.82/5,216.76 = 2,208.61/x
  3. Step 3: Cross multiply
    3,780.82x = 5,216.76 × 2,208.61
  4. Step 4: Simplify right side
    3,780.82x = 11,521,762.22
  5. Step 5: Solve for x
    x = 11,521,762.22/3,780.82
  6. Step 6: Final answer
    x = 3,047.43

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1.5x scale

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.