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Finding the Fourth Proportional to 8,650.63, 11,908.51 and 7,766.11

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Solution

The fourth proportional to 8,650.63, 11,908.51 and 7,766.11 is: 10,690.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,650.63 : 11,908.51 = 7,766.11 : x
  2. Step 2: Convert to fraction form
    8,650.63/11,908.51 = 7,766.11/x
  3. Step 3: Cross multiply
    8,650.63x = 11,908.51 × 7,766.11
  4. Step 4: Simplify right side
    8,650.63x = 92,482,798.60
  5. Step 5: Solve for x
    x = 92,482,798.60/8,650.63
  6. Step 6: Final answer
    x = 10,690.87

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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.