Home / 2,151.44-2,968.12-1,219.76

Finding the Fourth Proportional to 2,151.44, 2,968.12 and 1,219.76

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Solution

The fourth proportional to 2,151.44, 2,968.12 and 1,219.76 is: 1,682.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,151.44 : 2,968.12 = 1,219.76 : x
  2. Step 2: Convert to fraction form
    2,151.44/2,968.12 = 1,219.76/x
  3. Step 3: Cross multiply
    2,151.44x = 2,968.12 × 1,219.76
  4. Step 4: Simplify right side
    2,151.44x = 3,620,394.05
  5. Step 5: Solve for x
    x = 3,620,394.05/2,151.44
  6. Step 6: Final answer
    x = 1,682.78

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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.