Home / 7,913.25-11,866.30-2,979.39

Finding the Fourth Proportional to 7,913.25, 11,866.30 and 2,979.39

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Solution

The fourth proportional to 7,913.25, 11,866.30 and 2,979.39 is: 4,467.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,913.25 : 11,866.30 = 2,979.39 : x
  2. Step 2: Convert to fraction form
    7,913.25/11,866.30 = 2,979.39/x
  3. Step 3: Cross multiply
    7,913.25x = 11,866.30 × 2,979.39
  4. Step 4: Simplify right side
    7,913.25x = 35,354,335.56
  5. Step 5: Solve for x
    x = 35,354,335.56/7,913.25
  6. Step 6: Final answer
    x = 4,467.74

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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.