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Finding the Fourth Proportional to 8,425.44, 12,636.90 and 4,045.86

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Solution

The fourth proportional to 8,425.44, 12,636.90 and 4,045.86 is: 6,068.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,425.44 : 12,636.90 = 4,045.86 : x
  2. Step 2: Convert to fraction form
    8,425.44/12,636.90 = 4,045.86/x
  3. Step 3: Cross multiply
    8,425.44x = 12,636.90 × 4,045.86
  4. Step 4: Simplify right side
    8,425.44x = 51,127,128.23
  5. Step 5: Solve for x
    x = 51,127,128.23/8,425.44
  6. Step 6: Final answer
    x = 6,068.18

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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.