Home / 7,979.78-11,010.42-4,622.39

Finding the Fourth Proportional to 7,979.78, 11,010.42 and 4,622.39

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Solution

The fourth proportional to 7,979.78, 11,010.42 and 4,622.39 is: 6,377.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.78 : 11,010.42 = 4,622.39 : x
  2. Step 2: Convert to fraction form
    7,979.78/11,010.42 = 4,622.39/x
  3. Step 3: Cross multiply
    7,979.78x = 11,010.42 × 4,622.39
  4. Step 4: Simplify right side
    7,979.78x = 50,894,428.54
  5. Step 5: Solve for x
    x = 50,894,428.54/7,979.78
  6. Step 6: Final answer
    x = 6,377.93

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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.