Home / 7,979.38-11,011.07-4,621.97

Finding the Fourth Proportional to 7,979.38, 11,011.07 and 4,621.97

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Solution

The fourth proportional to 7,979.38, 11,011.07 and 4,621.97 is: 6,378.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.38 : 11,011.07 = 4,621.97 : x
  2. Step 2: Convert to fraction form
    7,979.38/11,011.07 = 4,621.97/x
  3. Step 3: Cross multiply
    7,979.38x = 11,011.07 × 4,621.97
  4. Step 4: Simplify right side
    7,979.38x = 50,892,874.29
  5. Step 5: Solve for x
    x = 50,892,874.29/7,979.38
  6. Step 6: Final answer
    x = 6,378.05

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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.