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Finding the Fourth Proportional to 11,658.92, 17,486.70 and 3,866.72

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Solution

The fourth proportional to 11,658.92, 17,486.70 and 3,866.72 is: 5,799.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,658.92 : 17,486.70 = 3,866.72 : x
  2. Step 2: Convert to fraction form
    11,658.92/17,486.70 = 3,866.72/x
  3. Step 3: Cross multiply
    11,658.92x = 17,486.70 × 3,866.72
  4. Step 4: Simplify right side
    11,658.92x = 67,616,172.62
  5. Step 5: Solve for x
    x = 67,616,172.62/11,658.92
  6. Step 6: Final answer
    x = 5,799.52

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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.