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Finding the Fourth Proportional to 8,612.10, 12,906.11 and 4,654.82

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Solution

The fourth proportional to 8,612.10, 12,906.11 and 4,654.82 is: 6,975.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,612.10 : 12,906.11 = 4,654.82 : x
  2. Step 2: Convert to fraction form
    8,612.10/12,906.11 = 4,654.82/x
  3. Step 3: Cross multiply
    8,612.10x = 12,906.11 × 4,654.82
  4. Step 4: Simplify right side
    8,612.10x = 60,075,618.95
  5. Step 5: Solve for x
    x = 60,075,618.95/8,612.10
  6. Step 6: Final answer
    x = 6,975.72

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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.