Home / 7,979.85-11,011.76-4,394.12

Finding the Fourth Proportional to 7,979.85, 11,011.76 and 4,394.12

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Solution

The fourth proportional to 7,979.85, 11,011.76 and 4,394.12 is: 6,063.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.85 : 11,011.76 = 4,394.12 : x
  2. Step 2: Convert to fraction form
    7,979.85/11,011.76 = 4,394.12/x
  3. Step 3: Cross multiply
    7,979.85x = 11,011.76 × 4,394.12
  4. Step 4: Simplify right side
    7,979.85x = 48,386,917.82
  5. Step 5: Solve for x
    x = 48,386,917.82/7,979.85
  6. Step 6: Final answer
    x = 6,063.64

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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.