Home / 8,110.91-12,160.74-3,181.05

Finding the Fourth Proportional to 8,110.91, 12,160.74 and 3,181.05

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Solution

The fourth proportional to 8,110.91, 12,160.74 and 3,181.05 is: 4,769.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,110.91 : 12,160.74 = 3,181.05 : x
  2. Step 2: Convert to fraction form
    8,110.91/12,160.74 = 3,181.05/x
  3. Step 3: Cross multiply
    8,110.91x = 12,160.74 × 3,181.05
  4. Step 4: Simplify right side
    8,110.91x = 38,683,921.98
  5. Step 5: Solve for x
    x = 38,683,921.98/8,110.91
  6. Step 6: Final answer
    x = 4,769.37

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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.