Home / 2,115.30-3,173.76-882.36

Finding the Fourth Proportional to 2,115.30, 3,173.76 and 882.36

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Solution

The fourth proportional to 2,115.30, 3,173.76 and 882.36 is: 1,323.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.30 : 3,173.76 = 882.36 : x
  2. Step 2: Convert to fraction form
    2,115.30/3,173.76 = 882.36/x
  3. Step 3: Cross multiply
    2,115.30x = 3,173.76 × 882.36
  4. Step 4: Simplify right side
    2,115.30x = 2,800,398.87
  5. Step 5: Solve for x
    x = 2,800,398.87/2,115.30
  6. Step 6: Final answer
    x = 1,323.88

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1.5x scale

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.