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Finding the Fourth Proportional to 8,611.52, 12,917.34 and 4,713.80

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Solution

The fourth proportional to 8,611.52, 12,917.34 and 4,713.80 is: 7,070.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,611.52 : 12,917.34 = 4,713.80 : x
  2. Step 2: Convert to fraction form
    8,611.52/12,917.34 = 4,713.80/x
  3. Step 3: Cross multiply
    8,611.52x = 12,917.34 × 4,713.80
  4. Step 4: Simplify right side
    8,611.52x = 60,889,692.71
  5. Step 5: Solve for x
    x = 60,889,692.71/8,611.52
  6. Step 6: Final answer
    x = 7,070.73

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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.