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Finding the Fourth Proportional to 8,636.07, 11,923.52 and 6,643.11

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Solution

The fourth proportional to 8,636.07, 11,923.52 and 6,643.11 is: 9,171.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,636.07 : 11,923.52 = 6,643.11 : x
  2. Step 2: Convert to fraction form
    8,636.07/11,923.52 = 6,643.11/x
  3. Step 3: Cross multiply
    8,636.07x = 11,923.52 × 6,643.11
  4. Step 4: Simplify right side
    8,636.07x = 79,209,221.73
  5. Step 5: Solve for x
    x = 79,209,221.73/8,636.07
  6. Step 6: Final answer
    x = 9,171.91

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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.