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Finding the Fourth Proportional to 8,516.57, 12,776.20 and 2,970.09

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Solution

The fourth proportional to 8,516.57, 12,776.20 and 2,970.09 is: 4,455.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,516.57 : 12,776.20 = 2,970.09 : x
  2. Step 2: Convert to fraction form
    8,516.57/12,776.20 = 2,970.09/x
  3. Step 3: Cross multiply
    8,516.57x = 12,776.20 × 2,970.09
  4. Step 4: Simplify right side
    8,516.57x = 37,946,456.43
  5. Step 5: Solve for x
    x = 37,946,456.43/8,516.57
  6. Step 6: Final answer
    x = 4,455.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.