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Finding the Fourth Proportional to 3,882.28, 5,822.28 and 1,690.48

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Solution

The fourth proportional to 3,882.28, 5,822.28 and 1,690.48 is: 2,535.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,882.28 : 5,822.28 = 1,690.48 : x
  2. Step 2: Convert to fraction form
    3,882.28/5,822.28 = 1,690.48/x
  3. Step 3: Cross multiply
    3,882.28x = 5,822.28 × 1,690.48
  4. Step 4: Simplify right side
    3,882.28x = 9,842,447.89
  5. Step 5: Solve for x
    x = 9,842,447.89/3,882.28
  6. Step 6: Final answer
    x = 2,535.22

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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.