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Finding the Fourth Proportional to 3,882.79, 5,821.94 and 2,651.69

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Solution

The fourth proportional to 3,882.79, 5,821.94 and 2,651.69 is: 3,976.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,882.79 : 5,821.94 = 2,651.69 : x
  2. Step 2: Convert to fraction form
    3,882.79/5,821.94 = 2,651.69/x
  3. Step 3: Cross multiply
    3,882.79x = 5,821.94 × 2,651.69
  4. Step 4: Simplify right side
    3,882.79x = 15,438,001.26
  5. Step 5: Solve for x
    x = 15,438,001.26/3,882.79
  6. Step 6: Final answer
    x = 3,976.01

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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.