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Finding the Fourth Proportional to 5,181.80, 7,150.80 and 2,823.89

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Solution

The fourth proportional to 5,181.80, 7,150.80 and 2,823.89 is: 3,896.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,181.80 : 7,150.80 = 2,823.89 : x
  2. Step 2: Convert to fraction form
    5,181.80/7,150.80 = 2,823.89/x
  3. Step 3: Cross multiply
    5,181.80x = 7,150.80 × 2,823.89
  4. Step 4: Simplify right side
    5,181.80x = 20,193,072.61
  5. Step 5: Solve for x
    x = 20,193,072.61/5,181.80
  6. Step 6: Final answer
    x = 3,896.92

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1.5x scale

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.