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Finding the Fourth Proportional to 3,891.83, 5,863.74 and 3,522.13

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Solution

The fourth proportional to 3,891.83, 5,863.74 and 3,522.13 is: 5,306.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,891.83 : 5,863.74 = 3,522.13 : x
  2. Step 2: Convert to fraction form
    3,891.83/5,863.74 = 3,522.13/x
  3. Step 3: Cross multiply
    3,891.83x = 5,863.74 × 3,522.13
  4. Step 4: Simplify right side
    3,891.83x = 20,652,826.70
  5. Step 5: Solve for x
    x = 20,652,826.70/3,891.83
  6. Step 6: Final answer
    x = 5,306.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.