Home / 8,120.71-12,181.34-4,170.89

Finding the Fourth Proportional to 8,120.71, 12,181.34 and 4,170.89

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Solution

The fourth proportional to 8,120.71, 12,181.34 and 4,170.89 is: 6,256.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,120.71 : 12,181.34 = 4,170.89 : x
  2. Step 2: Convert to fraction form
    8,120.71/12,181.34 = 4,170.89/x
  3. Step 3: Cross multiply
    8,120.71x = 12,181.34 × 4,170.89
  4. Step 4: Simplify right side
    8,120.71x = 50,807,029.19
  5. Step 5: Solve for x
    x = 50,807,029.19/8,120.71
  6. Step 6: Final answer
    x = 6,256.48

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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.