Home / 2,771.79-3,821.67-1,722.03

Finding the Fourth Proportional to 2,771.79, 3,821.67 and 1,722.03

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Solution

The fourth proportional to 2,771.79, 3,821.67 and 1,722.03 is: 2,374.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,771.79 : 3,821.67 = 1,722.03 : x
  2. Step 2: Convert to fraction form
    2,771.79/3,821.67 = 1,722.03/x
  3. Step 3: Cross multiply
    2,771.79x = 3,821.67 × 1,722.03
  4. Step 4: Simplify right side
    2,771.79x = 6,581,030.39
  5. Step 5: Solve for x
    x = 6,581,030.39/2,771.79
  6. Step 6: Final answer
    x = 2,374.29

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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.