Home / 7,976.78-11,007.72-4,439.91

Finding the Fourth Proportional to 7,976.78, 11,007.72 and 4,439.91

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Solution

The fourth proportional to 7,976.78, 11,007.72 and 4,439.91 is: 6,126.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,976.78 : 11,007.72 = 4,439.91 : x
  2. Step 2: Convert to fraction form
    7,976.78/11,007.72 = 4,439.91/x
  3. Step 3: Cross multiply
    7,976.78x = 11,007.72 × 4,439.91
  4. Step 4: Simplify right side
    7,976.78x = 48,873,286.11
  5. Step 5: Solve for x
    x = 48,873,286.11/7,976.78
  6. Step 6: Final answer
    x = 6,126.95

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.