Home / 8,187.20-12,280.50-2,343.80

Finding the Fourth Proportional to 8,187.20, 12,280.50 and 2,343.80

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Solution

The fourth proportional to 8,187.20, 12,280.50 and 2,343.80 is: 3,515.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,187.20 : 12,280.50 = 2,343.80 : x
  2. Step 2: Convert to fraction form
    8,187.20/12,280.50 = 2,343.80/x
  3. Step 3: Cross multiply
    8,187.20x = 12,280.50 × 2,343.80
  4. Step 4: Simplify right side
    8,187.20x = 28,783,035.90
  5. Step 5: Solve for x
    x = 28,783,035.90/8,187.20
  6. Step 6: Final answer
    x = 3,515.61

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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.