Home / 2,131.37-3,197.46-670.64

Finding the Fourth Proportional to 2,131.37, 3,197.46 and 670.64

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Solution

The fourth proportional to 2,131.37, 3,197.46 and 670.64 is: 1,006.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,131.37 : 3,197.46 = 670.64 : x
  2. Step 2: Convert to fraction form
    2,131.37/3,197.46 = 670.64/x
  3. Step 3: Cross multiply
    2,131.37x = 3,197.46 × 670.64
  4. Step 4: Simplify right side
    2,131.37x = 2,144,328.59
  5. Step 5: Solve for x
    x = 2,144,328.59/2,131.37
  6. Step 6: Final answer
    x = 1,006.08

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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.