Home / 7,761.18-11,641.44-1,917.64

Finding the Fourth Proportional to 7,761.18, 11,641.44 and 1,917.64

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Solution

The fourth proportional to 7,761.18, 11,641.44 and 1,917.64 is: 2,876.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,761.18 : 11,641.44 = 1,917.64 : x
  2. Step 2: Convert to fraction form
    7,761.18/11,641.44 = 1,917.64/x
  3. Step 3: Cross multiply
    7,761.18x = 11,641.44 × 1,917.64
  4. Step 4: Simplify right side
    7,761.18x = 22,324,091.00
  5. Step 5: Solve for x
    x = 22,324,091.00/7,761.18
  6. Step 6: Final answer
    x = 2,876.38

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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.