Home / 3,815.43-5,264.86-2,221.86

Finding the Fourth Proportional to 3,815.43, 5,264.86 and 2,221.86

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Solution

The fourth proportional to 3,815.43, 5,264.86 and 2,221.86 is: 3,065.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,815.43 : 5,264.86 = 2,221.86 : x
  2. Step 2: Convert to fraction form
    3,815.43/5,264.86 = 2,221.86/x
  3. Step 3: Cross multiply
    3,815.43x = 5,264.86 × 2,221.86
  4. Step 4: Simplify right side
    3,815.43x = 11,697,781.84
  5. Step 5: Solve for x
    x = 11,697,781.84/3,815.43
  6. Step 6: Final answer
    x = 3,065.91

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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.