Home / 2,131.24-3,197.58-670.60

Finding the Fourth Proportional to 2,131.24, 3,197.58 and 670.60

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Solution

The fourth proportional to 2,131.24, 3,197.58 and 670.60 is: 1,006.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,131.24 : 3,197.58 = 670.60 : x
  2. Step 2: Convert to fraction form
    2,131.24/3,197.58 = 670.60/x
  3. Step 3: Cross multiply
    2,131.24x = 3,197.58 × 670.60
  4. Step 4: Simplify right side
    2,131.24x = 2,144,297.15
  5. Step 5: Solve for x
    x = 2,144,297.15/2,131.24
  6. Step 6: Final answer
    x = 1,006.13

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1.5x scale

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.