Home / 8,180.20-12,270.30-5,717.80

Finding the Fourth Proportional to 8,180.20, 12,270.30 and 5,717.80

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Solution

The fourth proportional to 8,180.20, 12,270.30 and 5,717.80 is: 8,576.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,180.20 : 12,270.30 = 5,717.80 : x
  2. Step 2: Convert to fraction form
    8,180.20/12,270.30 = 5,717.80/x
  3. Step 3: Cross multiply
    8,180.20x = 12,270.30 × 5,717.80
  4. Step 4: Simplify right side
    8,180.20x = 70,159,121.34
  5. Step 5: Solve for x
    x = 70,159,121.34/8,180.20
  6. Step 6: Final answer
    x = 8,576.70

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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.