Home / 4,917.56-6,786.32-2,821.68

Finding the Fourth Proportional to 4,917.56, 6,786.32 and 2,821.68

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Solution

The fourth proportional to 4,917.56, 6,786.32 and 2,821.68 is: 3,893.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,917.56 : 6,786.32 = 2,821.68 : x
  2. Step 2: Convert to fraction form
    4,917.56/6,786.32 = 2,821.68/x
  3. Step 3: Cross multiply
    4,917.56x = 6,786.32 × 2,821.68
  4. Step 4: Simplify right side
    4,917.56x = 19,148,809.31
  5. Step 5: Solve for x
    x = 19,148,809.31/4,917.56
  6. Step 6: Final answer
    x = 3,893.97

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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.