Home / 7,980.92-11,965.36-5,508.68

Finding the Fourth Proportional to 7,980.92, 11,965.36 and 5,508.68

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Solution

The fourth proportional to 7,980.92, 11,965.36 and 5,508.68 is: 8,258.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,980.92 : 11,965.36 = 5,508.68 : x
  2. Step 2: Convert to fraction form
    7,980.92/11,965.36 = 5,508.68/x
  3. Step 3: Cross multiply
    7,980.92x = 11,965.36 × 5,508.68
  4. Step 4: Simplify right side
    7,980.92x = 65,913,339.32
  5. Step 5: Solve for x
    x = 65,913,339.32/7,980.92
  6. Step 6: Final answer
    x = 8,258.86

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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.