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Finding the Fourth Proportional to 5,863.74, 8,091.98 and 3,211.20

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Solution

The fourth proportional to 5,863.74, 8,091.98 and 3,211.20 is: 4,431.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,863.74 : 8,091.98 = 3,211.20 : x
  2. Step 2: Convert to fraction form
    5,863.74/8,091.98 = 3,211.20/x
  3. Step 3: Cross multiply
    5,863.74x = 8,091.98 × 3,211.20
  4. Step 4: Simplify right side
    5,863.74x = 25,984,950.12
  5. Step 5: Solve for x
    x = 25,984,950.12/5,863.74
  6. Step 6: Final answer
    x = 4,431.46

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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.