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Finding the Fourth Proportional to 8,315.62, 12,462.65 and 3,379.52

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Solution

The fourth proportional to 8,315.62, 12,462.65 and 3,379.52 is: 5,064.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,315.62 : 12,462.65 = 3,379.52 : x
  2. Step 2: Convert to fraction form
    8,315.62/12,462.65 = 3,379.52/x
  3. Step 3: Cross multiply
    8,315.62x = 12,462.65 × 3,379.52
  4. Step 4: Simplify right side
    8,315.62x = 42,117,774.93
  5. Step 5: Solve for x
    x = 42,117,774.93/8,315.62
  6. Step 6: Final answer
    x = 5,064.90

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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.