Home / 8,127.15-12,181.95-3,957.95

Finding the Fourth Proportional to 8,127.15, 12,181.95 and 3,957.95

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Solution

The fourth proportional to 8,127.15, 12,181.95 and 3,957.95 is: 5,932.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,127.15 : 12,181.95 = 3,957.95 : x
  2. Step 2: Convert to fraction form
    8,127.15/12,181.95 = 3,957.95/x
  3. Step 3: Cross multiply
    8,127.15x = 12,181.95 × 3,957.95
  4. Step 4: Simplify right side
    8,127.15x = 48,215,488.09
  5. Step 5: Solve for x
    x = 48,215,488.09/8,127.15
  6. Step 6: Final answer
    x = 5,932.64

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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.