Home / 8,131.17-12,200.40-3,199.17

Finding the Fourth Proportional to 8,131.17, 12,200.40 and 3,199.17

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Solution

The fourth proportional to 8,131.17, 12,200.40 and 3,199.17 is: 4,800.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,131.17 : 12,200.40 = 3,199.17 : x
  2. Step 2: Convert to fraction form
    8,131.17/12,200.40 = 3,199.17/x
  3. Step 3: Cross multiply
    8,131.17x = 12,200.40 × 3,199.17
  4. Step 4: Simplify right side
    8,131.17x = 39,031,153.67
  5. Step 5: Solve for x
    x = 39,031,153.67/8,131.17
  6. Step 6: Final answer
    x = 4,800.19

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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.