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Finding the Fourth Proportional to 8,605.29, 12,919.88 and 4,448.37

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Solution

The fourth proportional to 8,605.29, 12,919.88 and 4,448.37 is: 6,678.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,605.29 : 12,919.88 = 4,448.37 : x
  2. Step 2: Convert to fraction form
    8,605.29/12,919.88 = 4,448.37/x
  3. Step 3: Cross multiply
    8,605.29x = 12,919.88 × 4,448.37
  4. Step 4: Simplify right side
    8,605.29x = 57,472,406.60
  5. Step 5: Solve for x
    x = 57,472,406.60/8,605.29
  6. Step 6: Final answer
    x = 6,678.73

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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.