Home / 6,979.50-9,631.71-4,185.54

Finding the Fourth Proportional to 6,979.50, 9,631.71 and 4,185.54

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Solution

The fourth proportional to 6,979.50, 9,631.71 and 4,185.54 is: 5,776.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,979.50 : 9,631.71 = 4,185.54 : x
  2. Step 2: Convert to fraction form
    6,979.50/9,631.71 = 4,185.54/x
  3. Step 3: Cross multiply
    6,979.50x = 9,631.71 × 4,185.54
  4. Step 4: Simplify right side
    6,979.50x = 40,313,907.47
  5. Step 5: Solve for x
    x = 40,313,907.47/6,979.50
  6. Step 6: Final answer
    x = 5,776.05

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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.