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Finding the Fourth Proportional to 8,336.90, 11,691.10 and 8,336.90

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Solution

The fourth proportional to 8,336.90, 11,691.10 and 8,336.90 is: 11,691.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,336.90 : 11,691.10 = 8,336.90 : x
  2. Step 2: Convert to fraction form
    8,336.90/11,691.10 = 8,336.90/x
  3. Step 3: Cross multiply
    8,336.90x = 11,691.10 × 8,336.90
  4. Step 4: Simplify right side
    8,336.90x = 97,467,531.59
  5. Step 5: Solve for x
    x = 97,467,531.59/8,336.90
  6. Step 6: Final answer
    x = 11,691.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.