Home / 7,945.31-11,917.98-2,751.19

Finding the Fourth Proportional to 7,945.31, 11,917.98 and 2,751.19

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Solution

The fourth proportional to 7,945.31, 11,917.98 and 2,751.19 is: 4,126.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,945.31 : 11,917.98 = 2,751.19 : x
  2. Step 2: Convert to fraction form
    7,945.31/11,917.98 = 2,751.19/x
  3. Step 3: Cross multiply
    7,945.31x = 11,917.98 × 2,751.19
  4. Step 4: Simplify right side
    7,945.31x = 32,788,597.60
  5. Step 5: Solve for x
    x = 32,788,597.60/7,945.31
  6. Step 6: Final answer
    x = 4,126.79

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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.