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Finding the Fourth Proportional to 7,862.73, 11,791.05 and 3,181.55

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Solution

The fourth proportional to 7,862.73, 11,791.05 and 3,181.55 is: 4,771.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,862.73 : 11,791.05 = 3,181.55 : x
  2. Step 2: Convert to fraction form
    7,862.73/11,791.05 = 3,181.55/x
  3. Step 3: Cross multiply
    7,862.73x = 11,791.05 × 3,181.55
  4. Step 4: Simplify right side
    7,862.73x = 37,513,756.17
  5. Step 5: Solve for x
    x = 37,513,756.17/7,862.73
  6. Step 6: Final answer
    x = 4,771.09

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1.5x scale

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.