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Finding the Fourth Proportional to 3,892.05, 5,371.02 and 2,320.11

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Solution

The fourth proportional to 3,892.05, 5,371.02 and 2,320.11 is: 3,201.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,892.05 : 5,371.02 = 2,320.11 : x
  2. Step 2: Convert to fraction form
    3,892.05/5,371.02 = 2,320.11/x
  3. Step 3: Cross multiply
    3,892.05x = 5,371.02 × 2,320.11
  4. Step 4: Simplify right side
    3,892.05x = 12,461,357.21
  5. Step 5: Solve for x
    x = 12,461,357.21/3,892.05
  6. Step 6: Final answer
    x = 3,201.75

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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.