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Finding the Fourth Proportional to 6,516.57, 8,985.86 and 6,379.86

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Solution

The fourth proportional to 6,516.57, 8,985.86 and 6,379.86 is: 8,797.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,516.57 : 8,985.86 = 6,379.86 : x
  2. Step 2: Convert to fraction form
    6,516.57/8,985.86 = 6,379.86/x
  3. Step 3: Cross multiply
    6,516.57x = 8,985.86 × 6,379.86
  4. Step 4: Simplify right side
    6,516.57x = 57,328,496.88
  5. Step 5: Solve for x
    x = 57,328,496.88/6,516.57
  6. Step 6: Final answer
    x = 8,797.34

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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.