Home / 2,731.23-3,768.20-2,135.87

Finding the Fourth Proportional to 2,731.23, 3,768.20 and 2,135.87

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Solution

The fourth proportional to 2,731.23, 3,768.20 and 2,135.87 is: 2,946.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,731.23 : 3,768.20 = 2,135.87 : x
  2. Step 2: Convert to fraction form
    2,731.23/3,768.20 = 2,135.87/x
  3. Step 3: Cross multiply
    2,731.23x = 3,768.20 × 2,135.87
  4. Step 4: Simplify right side
    2,731.23x = 8,048,374.65
  5. Step 5: Solve for x
    x = 8,048,374.65/2,731.23
  6. Step 6: Final answer
    x = 2,946.79

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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.