Home / 8,379.18-12,565.73-3,112.96

Finding the Fourth Proportional to 8,379.18, 12,565.73 and 3,112.96

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Solution

The fourth proportional to 8,379.18, 12,565.73 and 3,112.96 is: 4,668.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,379.18 : 12,565.73 = 3,112.96 : x
  2. Step 2: Convert to fraction form
    8,379.18/12,565.73 = 3,112.96/x
  3. Step 3: Cross multiply
    8,379.18x = 12,565.73 × 3,112.96
  4. Step 4: Simplify right side
    8,379.18x = 39,116,599.30
  5. Step 5: Solve for x
    x = 39,116,599.30/8,379.18
  6. Step 6: Final answer
    x = 4,668.31

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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.