Home / 7,979.52-11,969.82-2,712.38

Finding the Fourth Proportional to 7,979.52, 11,969.82 and 2,712.38

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Solution

The fourth proportional to 7,979.52, 11,969.82 and 2,712.38 is: 4,068.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,979.52 : 11,969.82 = 2,712.38 : x
  2. Step 2: Convert to fraction form
    7,979.52/11,969.82 = 2,712.38/x
  3. Step 3: Cross multiply
    7,979.52x = 11,969.82 × 2,712.38
  4. Step 4: Simplify right side
    7,979.52x = 32,466,700.37
  5. Step 5: Solve for x
    x = 32,466,700.37/7,979.52
  6. Step 6: Final answer
    x = 4,068.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.