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Finding the Fourth Proportional to 9,081.80, 12,529.64 and 5,939.80

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Solution

The fourth proportional to 9,081.80, 12,529.64 and 5,939.80 is: 8,194.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,081.80 : 12,529.64 = 5,939.80 : x
  2. Step 2: Convert to fraction form
    9,081.80/12,529.64 = 5,939.80/x
  3. Step 3: Cross multiply
    9,081.80x = 12,529.64 × 5,939.80
  4. Step 4: Simplify right side
    9,081.80x = 74,423,555.67
  5. Step 5: Solve for x
    x = 74,423,555.67/9,081.80
  6. Step 6: Final answer
    x = 8,194.80

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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.