Home / 8,186.24-12,280.28-2,638.32

Finding the Fourth Proportional to 8,186.24, 12,280.28 and 2,638.32

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Solution

The fourth proportional to 8,186.24, 12,280.28 and 2,638.32 is: 3,957.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,186.24 : 12,280.28 = 2,638.32 : x
  2. Step 2: Convert to fraction form
    8,186.24/12,280.28 = 2,638.32/x
  3. Step 3: Cross multiply
    8,186.24x = 12,280.28 × 2,638.32
  4. Step 4: Simplify right side
    8,186.24x = 32,399,308.33
  5. Step 5: Solve for x
    x = 32,399,308.33/8,186.24
  6. Step 6: Final answer
    x = 3,957.78

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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.