Home / 2,631.68-3,632.91-1,687.83

Finding the Fourth Proportional to 2,631.68, 3,632.91 and 1,687.83

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Solution

The fourth proportional to 2,631.68, 3,632.91 and 1,687.83 is: 2,329.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,631.68 : 3,632.91 = 1,687.83 : x
  2. Step 2: Convert to fraction form
    2,631.68/3,632.91 = 1,687.83/x
  3. Step 3: Cross multiply
    2,631.68x = 3,632.91 × 1,687.83
  4. Step 4: Simplify right side
    2,631.68x = 6,131,707.88
  5. Step 5: Solve for x
    x = 6,131,707.88/2,631.68
  6. Step 6: Final answer
    x = 2,329.96

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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.