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Finding the Fourth Proportional to 8,260.39, 12,391.13 and 3,330.01

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Solution

The fourth proportional to 8,260.39, 12,391.13 and 3,330.01 is: 4,995.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,260.39 : 12,391.13 = 3,330.01 : x
  2. Step 2: Convert to fraction form
    8,260.39/12,391.13 = 3,330.01/x
  3. Step 3: Cross multiply
    8,260.39x = 12,391.13 × 3,330.01
  4. Step 4: Simplify right side
    8,260.39x = 41,262,586.81
  5. Step 5: Solve for x
    x = 41,262,586.81/8,260.39
  6. Step 6: Final answer
    x = 4,995.23

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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.