Home / 2,131.70-3,193.90-1,694.30

Finding the Fourth Proportional to 2,131.70, 3,193.90 and 1,694.30

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Solution

The fourth proportional to 2,131.70, 3,193.90 and 1,694.30 is: 2,538.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,131.70 : 3,193.90 = 1,694.30 : x
  2. Step 2: Convert to fraction form
    2,131.70/3,193.90 = 1,694.30/x
  3. Step 3: Cross multiply
    2,131.70x = 3,193.90 × 1,694.30
  4. Step 4: Simplify right side
    2,131.70x = 5,411,424.77
  5. Step 5: Solve for x
    x = 5,411,424.77/2,131.70
  6. Step 6: Final answer
    x = 2,538.55

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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.