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Finding the Fourth Proportional to 8,308.70, 11,658.10 and 8,308.70

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Solution

The fourth proportional to 8,308.70, 11,658.10 and 8,308.70 is: 11,658.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,308.70 : 11,658.10 = 8,308.70 : x
  2. Step 2: Convert to fraction form
    8,308.70/11,658.10 = 8,308.70/x
  3. Step 3: Cross multiply
    8,308.70x = 11,658.10 × 8,308.70
  4. Step 4: Simplify right side
    8,308.70x = 96,863,655.47
  5. Step 5: Solve for x
    x = 96,863,655.47/8,308.70
  6. Step 6: Final answer
    x = 11,658.10

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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.