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Finding the Fourth Proportional to 8,258.38, 12,392.21 and 3,331.51

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Solution

The fourth proportional to 8,258.38, 12,392.21 and 3,331.51 is: 4,999.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,258.38 : 12,392.21 = 3,331.51 : x
  2. Step 2: Convert to fraction form
    8,258.38/12,392.21 = 3,331.51/x
  3. Step 3: Cross multiply
    8,258.38x = 12,392.21 × 3,331.51
  4. Step 4: Simplify right side
    8,258.38x = 41,284,771.54
  5. Step 5: Solve for x
    x = 41,284,771.54/8,258.38
  6. Step 6: Final answer
    x = 4,999.14

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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.