Home / 2,115.57-3,171.09-882.66

Finding the Fourth Proportional to 2,115.57, 3,171.09 and 882.66

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Solution

The fourth proportional to 2,115.57, 3,171.09 and 882.66 is: 1,323.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.57 : 3,171.09 = 882.66 : x
  2. Step 2: Convert to fraction form
    2,115.57/3,171.09 = 882.66/x
  3. Step 3: Cross multiply
    2,115.57x = 3,171.09 × 882.66
  4. Step 4: Simplify right side
    2,115.57x = 2,798,994.30
  5. Step 5: Solve for x
    x = 2,798,994.30/2,115.57
  6. Step 6: Final answer
    x = 1,323.04

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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.