Home / 7,869.25-11,811.16-3,976.39

Finding the Fourth Proportional to 7,869.25, 11,811.16 and 3,976.39

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Solution

The fourth proportional to 7,869.25, 11,811.16 and 3,976.39 is: 5,968.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,869.25 : 11,811.16 = 3,976.39 : x
  2. Step 2: Convert to fraction form
    7,869.25/11,811.16 = 3,976.39/x
  3. Step 3: Cross multiply
    7,869.25x = 11,811.16 × 3,976.39
  4. Step 4: Simplify right side
    7,869.25x = 46,965,719.46
  5. Step 5: Solve for x
    x = 46,965,719.46/7,869.25
  6. Step 6: Final answer
    x = 5,968.26

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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.