Home / 2,125.05-3,187.13-663.41

Finding the Fourth Proportional to 2,125.05, 3,187.13 and 663.41

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Solution

The fourth proportional to 2,125.05, 3,187.13 and 663.41 is: 994.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125.05 : 3,187.13 = 663.41 : x
  2. Step 2: Convert to fraction form
    2,125.05/3,187.13 = 663.41/x
  3. Step 3: Cross multiply
    2,125.05x = 3,187.13 × 663.41
  4. Step 4: Simplify right side
    2,125.05x = 2,114,354.66
  5. Step 5: Solve for x
    x = 2,114,354.66/2,125.05
  6. Step 6: Final answer
    x = 994.97

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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.