Home / 2,131.15-3,196.72-650.38

Finding the Fourth Proportional to 2,131.15, 3,196.72 and 650.38

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Solution

The fourth proportional to 2,131.15, 3,196.72 and 650.38 is: 975.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,131.15 : 3,196.72 = 650.38 : x
  2. Step 2: Convert to fraction form
    2,131.15/3,196.72 = 650.38/x
  3. Step 3: Cross multiply
    2,131.15x = 3,196.72 × 650.38
  4. Step 4: Simplify right side
    2,131.15x = 2,079,082.75
  5. Step 5: Solve for x
    x = 2,079,082.75/2,131.15
  6. Step 6: Final answer
    x = 975.57

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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.