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Finding the Fourth Proportional to 3,882.54, 5,358.28 and 2,391.33

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Solution

The fourth proportional to 3,882.54, 5,358.28 and 2,391.33 is: 3,300.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,882.54 : 5,358.28 = 2,391.33 : x
  2. Step 2: Convert to fraction form
    3,882.54/5,358.28 = 2,391.33/x
  3. Step 3: Cross multiply
    3,882.54x = 5,358.28 × 2,391.33
  4. Step 4: Simplify right side
    3,882.54x = 12,813,415.71
  5. Step 5: Solve for x
    x = 12,813,415.71/3,882.54
  6. Step 6: Final answer
    x = 3,300.27

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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.