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Finding the Fourth Proportional to 8,672.78, 12,996.86 and 6,338.16

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Solution

The fourth proportional to 8,672.78, 12,996.86 and 6,338.16 is: 9,498.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,672.78 : 12,996.86 = 6,338.16 : x
  2. Step 2: Convert to fraction form
    8,672.78/12,996.86 = 6,338.16/x
  3. Step 3: Cross multiply
    8,672.78x = 12,996.86 × 6,338.16
  4. Step 4: Simplify right side
    8,672.78x = 82,376,113.19
  5. Step 5: Solve for x
    x = 82,376,113.19/8,672.78
  6. Step 6: Final answer
    x = 9,498.24

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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.