Home / 8,272.20-12,386.70-6,529.80

Finding the Fourth Proportional to 8,272.20, 12,386.70 and 6,529.80

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Solution

The fourth proportional to 8,272.20, 12,386.70 and 6,529.80 is: 9,777.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,272.20 : 12,386.70 = 6,529.80 : x
  2. Step 2: Convert to fraction form
    8,272.20/12,386.70 = 6,529.80/x
  3. Step 3: Cross multiply
    8,272.20x = 12,386.70 × 6,529.80
  4. Step 4: Simplify right side
    8,272.20x = 80,882,673.66
  5. Step 5: Solve for x
    x = 80,882,673.66/8,272.20
  6. Step 6: Final answer
    x = 9,777.65

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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.