Home / 2,722.20-4,083.44-990.76

Finding the Fourth Proportional to 2,722.20, 4,083.44 and 990.76

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Solution

The fourth proportional to 2,722.20, 4,083.44 and 990.76 is: 1,486.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,722.20 : 4,083.44 = 990.76 : x
  2. Step 2: Convert to fraction form
    2,722.20/4,083.44 = 990.76/x
  3. Step 3: Cross multiply
    2,722.20x = 4,083.44 × 990.76
  4. Step 4: Simplify right side
    2,722.20x = 4,045,709.01
  5. Step 5: Solve for x
    x = 4,045,709.01/2,722.20
  6. Step 6: Final answer
    x = 1,486.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.