Home / 8,186.31-12,280.50-3,188.80

Finding the Fourth Proportional to 8,186.31, 12,280.50 and 3,188.80

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Solution

The fourth proportional to 8,186.31, 12,280.50 and 3,188.80 is: 4,783.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,186.31 : 12,280.50 = 3,188.80 : x
  2. Step 2: Convert to fraction form
    8,186.31/12,280.50 = 3,188.80/x
  3. Step 3: Cross multiply
    8,186.31x = 12,280.50 × 3,188.80
  4. Step 4: Simplify right side
    8,186.31x = 39,160,019.73
  5. Step 5: Solve for x
    x = 39,160,019.73/8,186.31
  6. Step 6: Final answer
    x = 4,783.60

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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.