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Finding the Fourth Proportional to 8,459.82, 12,693.70 and 3,779.39

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Solution

The fourth proportional to 8,459.82, 12,693.70 and 3,779.39 is: 5,670.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,459.82 : 12,693.70 = 3,779.39 : x
  2. Step 2: Convert to fraction form
    8,459.82/12,693.70 = 3,779.39/x
  3. Step 3: Cross multiply
    8,459.82x = 12,693.70 × 3,779.39
  4. Step 4: Simplify right side
    8,459.82x = 47,974,442.84
  5. Step 5: Solve for x
    x = 47,974,442.84/8,459.82
  6. Step 6: Final answer
    x = 5,670.86

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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.