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Finding the Fourth Proportional to 2,541.70, 3,809.96 and 1,079.92

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Solution

The fourth proportional to 2,541.70, 3,809.96 and 1,079.92 is: 1,618.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,541.70 : 3,809.96 = 1,079.92 : x
  2. Step 2: Convert to fraction form
    2,541.70/3,809.96 = 1,079.92/x
  3. Step 3: Cross multiply
    2,541.70x = 3,809.96 × 1,079.92
  4. Step 4: Simplify right side
    2,541.70x = 4,114,452.00
  5. Step 5: Solve for x
    x = 4,114,452.00/2,541.70
  6. Step 6: Final answer
    x = 1,618.78

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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.