Home / 3,132.24-4,321.92-2,012.80

Finding the Fourth Proportional to 3,132.24, 4,321.92 and 2,012.80

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Solution

The fourth proportional to 3,132.24, 4,321.92 and 2,012.80 is: 2,777.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,132.24 : 4,321.92 = 2,012.80 : x
  2. Step 2: Convert to fraction form
    3,132.24/4,321.92 = 2,012.80/x
  3. Step 3: Cross multiply
    3,132.24x = 4,321.92 × 2,012.80
  4. Step 4: Simplify right side
    3,132.24x = 8,699,160.58
  5. Step 5: Solve for x
    x = 8,699,160.58/3,132.24
  6. Step 6: Final answer
    x = 2,777.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.