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Finding the Fourth Proportional to 8,623.11, 11,900.99 and 5,265.20

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Solution

The fourth proportional to 8,623.11, 11,900.99 and 5,265.20 is: 7,266.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,623.11 : 11,900.99 = 5,265.20 : x
  2. Step 2: Convert to fraction form
    8,623.11/11,900.99 = 5,265.20/x
  3. Step 3: Cross multiply
    8,623.11x = 11,900.99 × 5,265.20
  4. Step 4: Simplify right side
    8,623.11x = 62,661,092.55
  5. Step 5: Solve for x
    x = 62,661,092.55/8,623.11
  6. Step 6: Final answer
    x = 7,266.65

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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.