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Finding the Fourth Proportional to 8,258.61, 12,387.65 and 2,018.66

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Solution

The fourth proportional to 8,258.61, 12,387.65 and 2,018.66 is: 3,027.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,258.61 : 12,387.65 = 2,018.66 : x
  2. Step 2: Convert to fraction form
    8,258.61/12,387.65 = 2,018.66/x
  3. Step 3: Cross multiply
    8,258.61x = 12,387.65 × 2,018.66
  4. Step 4: Simplify right side
    8,258.61x = 25,006,381.52
  5. Step 5: Solve for x
    x = 25,006,381.52/8,258.61
  6. Step 6: Final answer
    x = 3,027.92

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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.