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Finding the Fourth Proportional to 6,516.79, 8,992.59 and 3,863.77

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Solution

The fourth proportional to 6,516.79, 8,992.59 and 3,863.77 is: 5,331.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,516.79 : 8,992.59 = 3,863.77 : x
  2. Step 2: Convert to fraction form
    6,516.79/8,992.59 = 3,863.77/x
  3. Step 3: Cross multiply
    6,516.79x = 8,992.59 × 3,863.77
  4. Step 4: Simplify right side
    6,516.79x = 34,745,299.46
  5. Step 5: Solve for x
    x = 34,745,299.46/6,516.79
  6. Step 6: Final answer
    x = 5,331.66

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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.