Home / 3,887.92-5,365.47-2,209.61

Finding the Fourth Proportional to 3,887.92, 5,365.47 and 2,209.61

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Solution

The fourth proportional to 3,887.92, 5,365.47 and 2,209.61 is: 3,049.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,887.92 : 5,365.47 = 2,209.61 : x
  2. Step 2: Convert to fraction form
    3,887.92/5,365.47 = 2,209.61/x
  3. Step 3: Cross multiply
    3,887.92x = 5,365.47 × 2,209.61
  4. Step 4: Simplify right side
    3,887.92x = 11,855,609.58
  5. Step 5: Solve for x
    x = 11,855,609.58/3,887.92
  6. Step 6: Final answer
    x = 3,049.35

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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.