Home / 2,680.86-3,699.09-1,724.61

Finding the Fourth Proportional to 2,680.86, 3,699.09 and 1,724.61

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Solution

The fourth proportional to 2,680.86, 3,699.09 and 1,724.61 is: 2,379.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,680.86 : 3,699.09 = 1,724.61 : x
  2. Step 2: Convert to fraction form
    2,680.86/3,699.09 = 1,724.61/x
  3. Step 3: Cross multiply
    2,680.86x = 3,699.09 × 1,724.61
  4. Step 4: Simplify right side
    2,680.86x = 6,379,487.60
  5. Step 5: Solve for x
    x = 6,379,487.60/2,680.86
  6. Step 6: Final answer
    x = 2,379.64

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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.