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Finding the Fourth Proportional to 8,258.54, 12,388.21 and 2,636.81

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Solution

The fourth proportional to 8,258.54, 12,388.21 and 2,636.81 is: 3,955.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,258.54 : 12,388.21 = 2,636.81 : x
  2. Step 2: Convert to fraction form
    8,258.54/12,388.21 = 2,636.81/x
  3. Step 3: Cross multiply
    8,258.54x = 12,388.21 × 2,636.81
  4. Step 4: Simplify right side
    8,258.54x = 32,665,356.01
  5. Step 5: Solve for x
    x = 32,665,356.01/8,258.54
  6. Step 6: Final answer
    x = 3,955.34

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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.