Home / 1,680.08-2,517.92-1,271.84

Finding the Fourth Proportional to 1,680.08, 2,517.92 and 1,271.84

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Solution

The fourth proportional to 1,680.08, 2,517.92 and 1,271.84 is: 1,906.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,680.08 : 2,517.92 = 1,271.84 : x
  2. Step 2: Convert to fraction form
    1,680.08/2,517.92 = 1,271.84/x
  3. Step 3: Cross multiply
    1,680.08x = 2,517.92 × 1,271.84
  4. Step 4: Simplify right side
    1,680.08x = 3,202,391.37
  5. Step 5: Solve for x
    x = 3,202,391.37/1,680.08
  6. Step 6: Final answer
    x = 1,906.09

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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.