Home / 8,055.38-12,078.97-3,126.43

Finding the Fourth Proportional to 8,055.38, 12,078.97 and 3,126.43

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Solution

The fourth proportional to 8,055.38, 12,078.97 and 3,126.43 is: 4,688.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,055.38 : 12,078.97 = 3,126.43 : x
  2. Step 2: Convert to fraction form
    8,055.38/12,078.97 = 3,126.43/x
  3. Step 3: Cross multiply
    8,055.38x = 12,078.97 × 3,126.43
  4. Step 4: Simplify right side
    8,055.38x = 37,764,054.18
  5. Step 5: Solve for x
    x = 37,764,054.18/8,055.38
  6. Step 6: Final answer
    x = 4,688.05

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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.