Home / 4,917.64-6,786.30-2,821.78

Finding the Fourth Proportional to 4,917.64, 6,786.30 and 2,821.78

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Solution

The fourth proportional to 4,917.64, 6,786.30 and 2,821.78 is: 3,894.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,917.64 : 6,786.30 = 2,821.78 : x
  2. Step 2: Convert to fraction form
    4,917.64/6,786.30 = 2,821.78/x
  3. Step 3: Cross multiply
    4,917.64x = 6,786.30 × 2,821.78
  4. Step 4: Simplify right side
    4,917.64x = 19,149,445.61
  5. Step 5: Solve for x
    x = 19,149,445.61/4,917.64
  6. Step 6: Final answer
    x = 3,894.03

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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.