Home / 8,249.90-12,381.01-3,319.59

Finding the Fourth Proportional to 8,249.90, 12,381.01 and 3,319.59

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Solution

The fourth proportional to 8,249.90, 12,381.01 and 3,319.59 is: 4,981.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,249.90 : 12,381.01 = 3,319.59 : x
  2. Step 2: Convert to fraction form
    8,249.90/12,381.01 = 3,319.59/x
  3. Step 3: Cross multiply
    8,249.90x = 12,381.01 × 3,319.59
  4. Step 4: Simplify right side
    8,249.90x = 41,099,802.63
  5. Step 5: Solve for x
    x = 41,099,802.63/8,249.90
  6. Step 6: Final answer
    x = 4,981.85

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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.