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Finding the Fourth Proportional to 8,369.98, 12,539.67 and 3,919.48

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Solution

The fourth proportional to 8,369.98, 12,539.67 and 3,919.48 is: 5,872.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,369.98 : 12,539.67 = 3,919.48 : x
  2. Step 2: Convert to fraction form
    8,369.98/12,539.67 = 3,919.48/x
  3. Step 3: Cross multiply
    8,369.98x = 12,539.67 × 3,919.48
  4. Step 4: Simplify right side
    8,369.98x = 49,148,985.77
  5. Step 5: Solve for x
    x = 49,148,985.77/8,369.98
  6. Step 6: Final answer
    x = 5,872.06

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1.5x scale

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.