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Finding the Fourth Proportional to 8,878.38, 12,253.04 and 6,636.38

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Solution

The fourth proportional to 8,878.38, 12,253.04 and 6,636.38 is: 9,158.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,878.38 : 12,253.04 = 6,636.38 : x
  2. Step 2: Convert to fraction form
    8,878.38/12,253.04 = 6,636.38/x
  3. Step 3: Cross multiply
    8,878.38x = 12,253.04 × 6,636.38
  4. Step 4: Simplify right side
    8,878.38x = 81,315,829.60
  5. Step 5: Solve for x
    x = 81,315,829.60/8,878.38
  6. Step 6: Final answer
    x = 9,158.86

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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.