Home / 2,115.30-3,170.70-1,018.96

Finding the Fourth Proportional to 2,115.30, 3,170.70 and 1,018.96

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Solution

The fourth proportional to 2,115.30, 3,170.70 and 1,018.96 is: 1,527.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115.30 : 3,170.70 = 1,018.96 : x
  2. Step 2: Convert to fraction form
    2,115.30/3,170.70 = 1,018.96/x
  3. Step 3: Cross multiply
    2,115.30x = 3,170.70 × 1,018.96
  4. Step 4: Simplify right side
    2,115.30x = 3,230,816.47
  5. Step 5: Solve for x
    x = 3,230,816.47/2,115.30
  6. Step 6: Final answer
    x = 1,527.36

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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.