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Finding the Fourth Proportional to 3,873.90, 5,812.92 and 3,664.84

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Solution

The fourth proportional to 3,873.90, 5,812.92 and 3,664.84 is: 5,499.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,873.90 : 5,812.92 = 3,664.84 : x
  2. Step 2: Convert to fraction form
    3,873.90/5,812.92 = 3,664.84/x
  3. Step 3: Cross multiply
    3,873.90x = 5,812.92 × 3,664.84
  4. Step 4: Simplify right side
    3,873.90x = 21,303,421.73
  5. Step 5: Solve for x
    x = 21,303,421.73/3,873.90
  6. Step 6: Final answer
    x = 5,499.22

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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.