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Finding the Fourth Proportional to 8,291.07, 12,442.07 and 3,908.97

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Solution

The fourth proportional to 8,291.07, 12,442.07 and 3,908.97 is: 5,866.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,291.07 : 12,442.07 = 3,908.97 : x
  2. Step 2: Convert to fraction form
    8,291.07/12,442.07 = 3,908.97/x
  3. Step 3: Cross multiply
    8,291.07x = 12,442.07 × 3,908.97
  4. Step 4: Simplify right side
    8,291.07x = 48,635,688.14
  5. Step 5: Solve for x
    x = 48,635,688.14/8,291.07
  6. Step 6: Final answer
    x = 5,866.03

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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.