Home / 7,945.89-11,918.98-2,102.65

Finding the Fourth Proportional to 7,945.89, 11,918.98 and 2,102.65

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Solution

The fourth proportional to 7,945.89, 11,918.98 and 2,102.65 is: 3,154.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,945.89 : 11,918.98 = 2,102.65 : x
  2. Step 2: Convert to fraction form
    7,945.89/11,918.98 = 2,102.65/x
  3. Step 3: Cross multiply
    7,945.89x = 11,918.98 × 2,102.65
  4. Step 4: Simplify right side
    7,945.89x = 25,061,443.30
  5. Step 5: Solve for x
    x = 25,061,443.30/7,945.89
  6. Step 6: Final answer
    x = 3,154.01

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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.