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Finding the Fourth Proportional to 8,625.07, 12,904.80 and 5,329.99

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Solution

The fourth proportional to 8,625.07, 12,904.80 and 5,329.99 is: 7,974.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,625.07 : 12,904.80 = 5,329.99 : x
  2. Step 2: Convert to fraction form
    8,625.07/12,904.80 = 5,329.99/x
  3. Step 3: Cross multiply
    8,625.07x = 12,904.80 × 5,329.99
  4. Step 4: Simplify right side
    8,625.07x = 68,782,454.95
  5. Step 5: Solve for x
    x = 68,782,454.95/8,625.07
  6. Step 6: Final answer
    x = 7,974.71

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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.