Home / 2,125.70-3,190.54-1,086.42

Finding the Fourth Proportional to 2,125.70, 3,190.54 and 1,086.42

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Solution

The fourth proportional to 2,125.70, 3,190.54 and 1,086.42 is: 1,630.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.70 : 3,190.54 = 1,086.42 : x
  2. Step 2: Convert to fraction form
    2,125.70/3,190.54 = 1,086.42/x
  3. Step 3: Cross multiply
    2,125.70x = 3,190.54 × 1,086.42
  4. Step 4: Simplify right side
    2,125.70x = 3,466,266.47
  5. Step 5: Solve for x
    x = 3,466,266.47/2,125.70
  6. Step 6: Final answer
    x = 1,630.65

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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.