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Finding the Fourth Proportional to 8,605.09, 12,890.83 and 5,930.37

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Solution

The fourth proportional to 8,605.09, 12,890.83 and 5,930.37 is: 8,883.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,605.09 : 12,890.83 = 5,930.37 : x
  2. Step 2: Convert to fraction form
    8,605.09/12,890.83 = 5,930.37/x
  3. Step 3: Cross multiply
    8,605.09x = 12,890.83 × 5,930.37
  4. Step 4: Simplify right side
    8,605.09x = 76,447,391.51
  5. Step 5: Solve for x
    x = 76,447,391.51/8,605.09
  6. Step 6: Final answer
    x = 8,883.97

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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.