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Finding the Fourth Proportional to 8,996.76, 12,415.14 and 6,638.04

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Solution

The fourth proportional to 8,996.76, 12,415.14 and 6,638.04 is: 9,160.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,996.76 : 12,415.14 = 6,638.04 : x
  2. Step 2: Convert to fraction form
    8,996.76/12,415.14 = 6,638.04/x
  3. Step 3: Cross multiply
    8,996.76x = 12,415.14 × 6,638.04
  4. Step 4: Simplify right side
    8,996.76x = 82,412,195.93
  5. Step 5: Solve for x
    x = 82,412,195.93/8,996.76
  6. Step 6: Final answer
    x = 9,160.21

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1.5x scale

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.