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Finding the Fourth Proportional to 8,578.76, 12,869.18 and 3,030.97

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Solution

The fourth proportional to 8,578.76, 12,869.18 and 3,030.97 is: 4,546.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,578.76 : 12,869.18 = 3,030.97 : x
  2. Step 2: Convert to fraction form
    8,578.76/12,869.18 = 3,030.97/x
  3. Step 3: Cross multiply
    8,578.76x = 12,869.18 × 3,030.97
  4. Step 4: Simplify right side
    8,578.76x = 39,006,062.54
  5. Step 5: Solve for x
    x = 39,006,062.54/8,578.76
  6. Step 6: Final answer
    x = 4,546.82

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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.