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Finding the Fourth Proportional to 8,548.68, 12,815.10 and 4,379.51

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Solution

The fourth proportional to 8,548.68, 12,815.10 and 4,379.51 is: 6,565.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,548.68 : 12,815.10 = 4,379.51 : x
  2. Step 2: Convert to fraction form
    8,548.68/12,815.10 = 4,379.51/x
  3. Step 3: Cross multiply
    8,548.68x = 12,815.10 × 4,379.51
  4. Step 4: Simplify right side
    8,548.68x = 56,123,858.60
  5. Step 5: Solve for x
    x = 56,123,858.60/8,548.68
  6. Step 6: Final answer
    x = 6,565.21

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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.