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Finding the Fourth Proportional to 8,258.78, 12,387.92 and 2,018.84

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Solution

The fourth proportional to 8,258.78, 12,387.92 and 2,018.84 is: 3,028.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,258.78 : 12,387.92 = 2,018.84 : x
  2. Step 2: Convert to fraction form
    8,258.78/12,387.92 = 2,018.84/x
  3. Step 3: Cross multiply
    8,258.78x = 12,387.92 × 2,018.84
  4. Step 4: Simplify right side
    8,258.78x = 25,009,156.38
  5. Step 5: Solve for x
    x = 25,009,156.38/8,258.78
  6. Step 6: Final answer
    x = 3,028.19

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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.