Home / 7,945.16-11,917.78-3,267.72

Finding the Fourth Proportional to 7,945.16, 11,917.78 and 3,267.72

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Solution

The fourth proportional to 7,945.16, 11,917.78 and 3,267.72 is: 4,901.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,945.16 : 11,917.78 = 3,267.72 : x
  2. Step 2: Convert to fraction form
    7,945.16/11,917.78 = 3,267.72/x
  3. Step 3: Cross multiply
    7,945.16x = 11,917.78 × 3,267.72
  4. Step 4: Simplify right side
    7,945.16x = 38,943,968.06
  5. Step 5: Solve for x
    x = 38,943,968.06/7,945.16
  6. Step 6: Final answer
    x = 4,901.60

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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.