Home / 2,135.20-3,187.36-1,876

Finding the Fourth Proportional to 2,135.20, 3,187.36 and 1,876

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Solution

The fourth proportional to 2,135.20, 3,187.36 and 1,876 is: 2,800.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,135.20 : 3,187.36 = 1,876 : x
  2. Step 2: Convert to fraction form
    2,135.20/3,187.36 = 1,876/x
  3. Step 3: Cross multiply
    2,135.20x = 3,187.36 × 1,876
  4. Step 4: Simplify right side
    2,135.20x = 5,979,487.36
  5. Step 5: Solve for x
    x = 5,979,487.36/2,135.20
  6. Step 6: Final answer
    x = 2,800.43

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.