Home / 4,917.90-6,786.99-2,821.74

Finding the Fourth Proportional to 4,917.90, 6,786.99 and 2,821.74

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Solution

The fourth proportional to 4,917.90, 6,786.99 and 2,821.74 is: 3,894.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,917.90 : 6,786.99 = 2,821.74 : x
  2. Step 2: Convert to fraction form
    4,917.90/6,786.99 = 2,821.74/x
  3. Step 3: Cross multiply
    4,917.90x = 6,786.99 × 2,821.74
  4. Step 4: Simplify right side
    4,917.90x = 19,151,121.16
  5. Step 5: Solve for x
    x = 19,151,121.16/4,917.90
  6. Step 6: Final answer
    x = 3,894.17

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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.