Home / 5,120.13-7,665.21-3,892.44

Finding the Fourth Proportional to 5,120.13, 7,665.21 and 3,892.44

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Solution

The fourth proportional to 5,120.13, 7,665.21 and 3,892.44 is: 5,827.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,120.13 : 7,665.21 = 3,892.44 : x
  2. Step 2: Convert to fraction form
    5,120.13/7,665.21 = 3,892.44/x
  3. Step 3: Cross multiply
    5,120.13x = 7,665.21 × 3,892.44
  4. Step 4: Simplify right side
    5,120.13x = 29,836,370.01
  5. Step 5: Solve for x
    x = 29,836,370.01/5,120.13
  6. Step 6: Final answer
    x = 5,827.27

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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.