Home / 1,968.92-2,953.31-1,145.55

Finding the Fourth Proportional to 1,968.92, 2,953.31 and 1,145.55

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Solution

The fourth proportional to 1,968.92, 2,953.31 and 1,145.55 is: 1,718.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,968.92 : 2,953.31 = 1,145.55 : x
  2. Step 2: Convert to fraction form
    1,968.92/2,953.31 = 1,145.55/x
  3. Step 3: Cross multiply
    1,968.92x = 2,953.31 × 1,145.55
  4. Step 4: Simplify right side
    1,968.92x = 3,383,158.54
  5. Step 5: Solve for x
    x = 3,383,158.54/1,968.92
  6. Step 6: Final answer
    x = 1,718.29

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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.