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Finding the Fourth Proportional to 8,246.70, 12,376.26 and 7,090.02

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Solution

The fourth proportional to 8,246.70, 12,376.26 and 7,090.02 is: 10,640.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,246.70 : 12,376.26 = 7,090.02 : x
  2. Step 2: Convert to fraction form
    8,246.70/12,376.26 = 7,090.02/x
  3. Step 3: Cross multiply
    8,246.70x = 12,376.26 × 7,090.02
  4. Step 4: Simplify right side
    8,246.70x = 87,747,930.93
  5. Step 5: Solve for x
    x = 87,747,930.93/8,246.70
  6. Step 6: Final answer
    x = 10,640.37

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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.