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Finding the Fourth Proportional to 6,516.04, 8,991.78 and 3,863.72

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Solution

The fourth proportional to 6,516.04, 8,991.78 and 3,863.72 is: 5,331.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,516.04 : 8,991.78 = 3,863.72 : x
  2. Step 2: Convert to fraction form
    6,516.04/8,991.78 = 3,863.72/x
  3. Step 3: Cross multiply
    6,516.04x = 8,991.78 × 3,863.72
  4. Step 4: Simplify right side
    6,516.04x = 34,741,720.22
  5. Step 5: Solve for x
    x = 34,741,720.22/6,516.04
  6. Step 6: Final answer
    x = 5,331.72

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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.