Home / 2,135.31-3,198.70-1,697.30

Finding the Fourth Proportional to 2,135.31, 3,198.70 and 1,697.30

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Solution

The fourth proportional to 2,135.31, 3,198.70 and 1,697.30 is: 2,542.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.31 : 3,198.70 = 1,697.30 : x
  2. Step 2: Convert to fraction form
    2,135.31/3,198.70 = 1,697.30/x
  3. Step 3: Cross multiply
    2,135.31x = 3,198.70 × 1,697.30
  4. Step 4: Simplify right side
    2,135.31x = 5,429,153.51
  5. Step 5: Solve for x
    x = 5,429,153.51/2,135.31
  6. Step 6: Final answer
    x = 2,542.56

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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.