Home / 7,979.78-11,010.49-4,442.31

Finding the Fourth Proportional to 7,979.78, 11,010.49 and 4,442.31

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Solution

The fourth proportional to 7,979.78, 11,010.49 and 4,442.31 is: 6,129.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.78 : 11,010.49 = 4,442.31 : x
  2. Step 2: Convert to fraction form
    7,979.78/11,010.49 = 4,442.31/x
  3. Step 3: Cross multiply
    7,979.78x = 11,010.49 × 4,442.31
  4. Step 4: Simplify right side
    7,979.78x = 48,911,998.73
  5. Step 5: Solve for x
    x = 48,911,998.73/7,979.78
  6. Step 6: Final answer
    x = 6,129.49

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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.