Home / 2,521.92-3,786.08-2,139.60

Finding the Fourth Proportional to 2,521.92, 3,786.08 and 2,139.60

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Solution

The fourth proportional to 2,521.92, 3,786.08 and 2,139.60 is: 3,212.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,521.92 : 3,786.08 = 2,139.60 : x
  2. Step 2: Convert to fraction form
    2,521.92/3,786.08 = 2,139.60/x
  3. Step 3: Cross multiply
    2,521.92x = 3,786.08 × 2,139.60
  4. Step 4: Simplify right side
    2,521.92x = 8,100,696.77
  5. Step 5: Solve for x
    x = 8,100,696.77/2,521.92
  6. Step 6: Final answer
    x = 3,212.11

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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.