Home / 7,821.88-11,732.86-2,627.80

Finding the Fourth Proportional to 7,821.88, 11,732.86 and 2,627.80

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Solution

The fourth proportional to 7,821.88, 11,732.86 and 2,627.80 is: 3,941.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,821.88 : 11,732.86 = 2,627.80 : x
  2. Step 2: Convert to fraction form
    7,821.88/11,732.86 = 2,627.80/x
  3. Step 3: Cross multiply
    7,821.88x = 11,732.86 × 2,627.80
  4. Step 4: Simplify right side
    7,821.88x = 30,831,609.51
  5. Step 5: Solve for x
    x = 30,831,609.51/7,821.88
  6. Step 6: Final answer
    x = 3,941.71

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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.