Home / 7,885.20-11,829.60-2,691

Finding the Fourth Proportional to 7,885.20, 11,829.60 and 2,691

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Solution

The fourth proportional to 7,885.20, 11,829.60 and 2,691 is: 4,037.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,885.20 : 11,829.60 = 2,691 : x
  2. Step 2: Convert to fraction form
    7,885.20/11,829.60 = 2,691/x
  3. Step 3: Cross multiply
    7,885.20x = 11,829.60 × 2,691
  4. Step 4: Simplify right side
    7,885.20x = 31,833,453.60
  5. Step 5: Solve for x
    x = 31,833,453.60/7,885.20
  6. Step 6: Final answer
    x = 4,037.11

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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.