Home / 8,118.45-12,172.98-3,182.31

Finding the Fourth Proportional to 8,118.45, 12,172.98 and 3,182.31

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Solution

The fourth proportional to 8,118.45, 12,172.98 and 3,182.31 is: 4,771.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,118.45 : 12,172.98 = 3,182.31 : x
  2. Step 2: Convert to fraction form
    8,118.45/12,172.98 = 3,182.31/x
  3. Step 3: Cross multiply
    8,118.45x = 12,172.98 × 3,182.31
  4. Step 4: Simplify right side
    8,118.45x = 38,738,195.98
  5. Step 5: Solve for x
    x = 38,738,195.98/8,118.45
  6. Step 6: Final answer
    x = 4,771.62

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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.