Home / 7,979.49-11,011.77-4,442.78

Finding the Fourth Proportional to 7,979.49, 11,011.77 and 4,442.78

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Solution

The fourth proportional to 7,979.49, 11,011.77 and 4,442.78 is: 6,131.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.49 : 11,011.77 = 4,442.78 : x
  2. Step 2: Convert to fraction form
    7,979.49/11,011.77 = 4,442.78/x
  3. Step 3: Cross multiply
    7,979.49x = 11,011.77 × 4,442.78
  4. Step 4: Simplify right side
    7,979.49x = 48,922,899.05
  5. Step 5: Solve for x
    x = 48,922,899.05/7,979.49
  6. Step 6: Final answer
    x = 6,131.08

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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.