Home / 7,805.19-11,706.89-1,961.36

Finding the Fourth Proportional to 7,805.19, 11,706.89 and 1,961.36

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Solution

The fourth proportional to 7,805.19, 11,706.89 and 1,961.36 is: 2,941.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,805.19 : 11,706.89 = 1,961.36 : x
  2. Step 2: Convert to fraction form
    7,805.19/11,706.89 = 1,961.36/x
  3. Step 3: Cross multiply
    7,805.19x = 11,706.89 × 1,961.36
  4. Step 4: Simplify right side
    7,805.19x = 22,961,357.43
  5. Step 5: Solve for x
    x = 22,961,357.43/7,805.19
  6. Step 6: Final answer
    x = 2,941.81

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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.