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Finding the Fourth Proportional to 5,199.71, 7,181.58 and 3,789.71

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Solution

The fourth proportional to 5,199.71, 7,181.58 and 3,789.71 is: 5,234.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,199.71 : 7,181.58 = 3,789.71 : x
  2. Step 2: Convert to fraction form
    5,199.71/7,181.58 = 3,789.71/x
  3. Step 3: Cross multiply
    5,199.71x = 7,181.58 × 3,789.71
  4. Step 4: Simplify right side
    5,199.71x = 27,216,069.63
  5. Step 5: Solve for x
    x = 27,216,069.63/5,199.71
  6. Step 6: Final answer
    x = 5,234.16

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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.