Home / 3,887.29-5,364.32-2,118.86

Finding the Fourth Proportional to 3,887.29, 5,364.32 and 2,118.86

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Solution

The fourth proportional to 3,887.29, 5,364.32 and 2,118.86 is: 2,923.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,887.29 : 5,364.32 = 2,118.86 : x
  2. Step 2: Convert to fraction form
    3,887.29/5,364.32 = 2,118.86/x
  3. Step 3: Cross multiply
    3,887.29x = 5,364.32 × 2,118.86
  4. Step 4: Simplify right side
    3,887.29x = 11,366,243.08
  5. Step 5: Solve for x
    x = 11,366,243.08/3,887.29
  6. Step 6: Final answer
    x = 2,923.95

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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.